Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on RUclips) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. ========================================================= For PDF Notes and best Assignments visit @ physicswallahalakhpandey.com/ Follow us on: Instagram instagram.com/physicswallah/ Facebook: facebook.com/physicswallah =========================================================== 12th Chapter 9 : Ray Optics 01 : Introduction & Reflection in a Plane Mirror JEE /NEET ruclips.net/video/_nGZGo4gHGo/видео.html Ray Optics 02 : Number of Images formeed by Two Plane Mirrors JEE/NEET ruclips.net/video/xLMFyXXUfTs/видео.html Ray Optics 03 : Velocity in Plane Mirror - Velocity of Object & Velocity of Image JEE/NEET ruclips.net/video/-zjwlf1sPtQ/видео.html Ray Optics 04 : Spherical Mirrors: Introduction :Focus ,Focal Length & Focal Plane - Sign Convention ruclips.net/video/NdJEdh3xC2Y/видео.html Ray Optics 05 : Image Formation by Concave & Convex Mirror for Different Position of Object JEE/NEET ruclips.net/video/iEMPrqdGPMU/видео.html Ray Optics 06 : Mirror's Formula -Derivation for Concave & Convex Mirror +Basic Numericals + Concept ruclips.net/video/bSxWxqfhIYE/видео.html Ray Optics 07 : Magnification - Magnification & Mirror's Formula Best Numericals JEE/NEET ruclips.net/video/P2pLDPj-DWk/видео.html Ray Optics 08 : Combination Of Mirrors - Concept of Virtual Object JEE /NEET ruclips.net/video/GLBzqqpcRF4/видео.html Ray Optics 09 : Velocity in Spherical Mirrors - Velocity Of Object & Velocity Of Image JEE/NEET ruclips.net/video/IHL0rxbPWJo/видео.html Ray Optics 10 : Refraction Of Light : Snell's Law & Refractive Index JEE/NEET ruclips.net/video/VimYgbSw28g/видео.html Ray Optics 11 : Real Depth and Apparent Depth - Complete Concept with Best Numericals JEE/NEET ruclips.net/video/rUi_chxd_qE/видео.html Ray Optics 12 : Refraction - Shift through a Glass Slab : JEE/NEET ruclips.net/video/18DZxFMlNqE/видео.html Ray Optics 13 : Critical Angle and Total Internal Reflection - TIR - JEE/NEET ruclips.net/video/GIv3PN9vcR8/видео.html Ray Optics 14 : Refraction through Prism : Concept , Numericals & Minimum Deviation Case JEE/NEET ruclips.net/video/DnC5-gM81qc/видео.html Ray Optics 15 : Refraction from Spherical Surfaces - Formula - Derivation and Numericals JEE/NEET ruclips.net/video/SZm0KLuRpKI/видео.html Ray Optics 16 : Lens - Introduction : It's Types , Optical Centre , Focus , Focal Length JEE/NEET ruclips.net/video/-K9yueGZ5pI/видео.html Ray Optics 17 :Image Formation By Convex and Concave Lens for different Positions of Object JEE/NEET ruclips.net/video/jJB4roc5n2E/видео.html Ray Optics 18 : Lens Maker's Formula - Derivtion and All Types of Numericals JEE/NEET ruclips.net/video/KYHt5Dxza5Y/видео.html Ray Optics 19 : Magnification - Magnification & Len's Formula with Best Numericals JEE/NEET ruclips.net/video/_E_6EcA6Kr4/видео.html Ray Optics 20 : Combination of thin lenses in Contact II Cutting Of Lenses II Power - JEE/NEET ruclips.net/video/8i1_zA336Pc/видео.html Ray Optics 21 : Silvering Of One Surface Of Lens - Silvered Lens JEE/NEET ruclips.net/video/3eX52D-7G80/видео.html Ray Optics 22 : Microscope - Simple Microscope & Compound Microscope - JEE/NEET ruclips.net/video/-QIximwdKYI/видео.html Ray Optics 23 : Telescope - Refracting Telescope & Reflecting Telescope JEE/NEET ruclips.net/video/n8nCGAg3AuU/видео.html
0:30 introduction and near point 6:36 visual angle (very imp for magnification) 11:15 magnification of microscope 14:20 simple microscope 25:45 special case 40:00 compound microscope 1:00:30 summary and formula discussed in lecture 1:03:00 numericals 🤔🤔 Hope it helped you 😇😇✌
@@sankalpangira Expectations always Hurt Noting is easy as it seems it takes longer than expected if something has to go wrong it will go wrong and at the worst possible moment
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें ) Please watch ruclips.net/video/c4Nw-5-KcBg/видео.html
Today it has been almost 4 years since this lecture was uploaded , See what he was at that time and what he is now , this shows us that hardwork never goes in vain
The man who taught Physics to the whole of young India.😌 Trust me Sir, I have joined two coaching institutes(one physical, other dlp) but none made me understand Ray Optics as clearly as you did. You’re the best in your field. I have a lot of respect for you. God bless you Sir🥰
Sir you proved the all the moral lessons I read in books "HARD WORK IS THE KEY TO SUCCESS", "NO PAIN NO GAIN " , "WHERE THERE'S WILL , THERE'S ALWAYS A WAY" , "BELIEVE IN URSELF" and there are many that you've proved. Lots of love for u sir.❤❤❤❤
28:45. Motivating himself. No one is there to motivate him at night alone in room. This justifies what sir used to say motivation is in yourself. U r inspiration sir❤️
My teacher ask me : what do you want to become? 😊 Me: i want to become just like physicswallah "Alakh sir🙏" Mam : who is he? 😠 Me: mam aapki glti nhi h !! 😂 Love u sir from uttrakhand💗
Hello Alakh Sir Ji ,my name is Ummar and i am from kashmir.I read all my 11th grade from you and i am also read 12th grade from you,Sir you encouraged me and all your students .We found 11th and 12th is easy to read because of you.We also prepared for board exams as well as competative exams just because of you .Finally sir you are our Backbone....!
Itna acha content.........🥰🥰🥰🙏🙏🙏 Mere gaon me physics ki coaching ki cost 20,000 annually h......🙄😳😳😲😲😳😳😳 I can't afford😥😥😩😩😩😩😩😩😩😩😩😩😩🥺🥺😭😭😭😭😭😭😭😭😭😭😭😭 Aur physics wallah sir free me itna valuable content de rhe h hme Hats off sir🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏 U r so respectful and love u sir😍🤩😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘♥️♥️♥️♥️💕💕♥️♥️♥️
Its my humble request to all the people who comment for praising sir that sir pichle 2yrs se youtube mein hain aur unki har video mein unki taareef ki jaati hai.... He knows he means a lot to us.... In comments ki wajah se sir un comments ko nahi padh paate jo actually bahut zaroori hain... So i request to all of u ki comments mein sirf doubts aur important information hi share kare🙆♀🙆♀🙆♀🙆♀🙏🙏🙏
Sach m yrr jbb bhi meko lgta hai ki abb physics pdhna hai toh meko sbse phle alakh sir hi ydd aate hai mtlb jbb bhi lgta hai iss topic se kuch smjh nhi aaya m RUclips open krta huun aur yaha aata huun sir m aapki life time bhi taareef krrun toh meri life km pd jayegi kyuki aap itni tareef deserve krte ho jo koi andaza nhi lga skta
@@gangwargangwar2081 I got 77 out of 80 in sa1 just because of a mathematical mistake. Edit: I am in class 10 I watched this video because I'm an jee aspirant so wanna complete easy topics of 11th and 12th so that I can focus on jee
@@gangwargangwar2081 Studying by Sir's videos made me achieve this good score in current class and also study side by side with iit foundation series of pearson so that I can focus on jee
It completely feels like as if you are sitting in any coaching institute or any classroom when you are watching Alakh Sir's lectures inspite of being at home.
I studied microscope from more than 3 teachers and to tell you all, only Alakh sir has the capability to explain to the level ki sab clearly samajh aaye... Jab koi topic samajh na aaye physics mein, kahin jaane ki zarurat nahi... Just open RUclips and search Alakh Pandey with the topic name.... aisa kuch hai hi nahi jo aap samajh na payein when he teaches❤️❤️
Hey guys enjoy as much as u can in your 12th class as these days will never come again i miss my 10 i miss my 12 even though my classmate mean nothing to me but i still miss them do your studies but find 1-2 hours a week to enjoy
Even we feel connected to you sir, really not just saying. Jab mujhe sach me koi point samajh me nai aata hai usi time aap keh dete hain "Nai aayaa samajh? Ye dekho dobara". If this is not connection, then I don't know what is.💓🙏🏻 I lack words to express your hardwork, dedication and honesty towards your work.👑 Teacher like you is the dream of every student out there!
Almost 2 Million 💯💯thanks for sharing exact concepts with visualization of we kids subjects which majority of us used to fear from but not anymore because of Physicswallah! 😊
Just one thing to say sir, just keep loving Physics! You're doing for this nation..... Mai toh keh rha hun sir election mein khade ho jao pakka jeet jaoge! Itna selfless work toh koi Neta bhi nhi karta😁
Exactly after a week I'll be writing NEET 2024 which is going to be my 1st attempt. Really anxious at the moment. Came here to listen to sir and calm myself down since he has been an integral part of my NEET journey. Hope everything goes well and everyone who has worked hard for this exam gets the desired results✨️
Hello Sir, this is the first time ever.. I'm commenting.., I'm really amazed with the way you teach, I always wanted to tell you how amazing you are.. but never had my own channel to do so! Finally I'm thanking you Sir.. aapki teaching super duper Aasman se oopar wale level ki hai! Lots of respect for you Sir❤️☺️
Hydrogen chapter previous years best questions video ( पहलेअलख सर का वीडियो देखें फिर ये questions practiceकरें ) Please watch ruclips.net/video/c4Nw-5-KcBg/видео.html
Lots of love sirji. Sach me haathi jaise concept ko machar bana diya woh bhi bina microscope ke🤣🤣🤣 Jokes apart really appreciate your talent of explaining complicated concepts in sucha manner.
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें ) Please watch ruclips.net/video/c4Nw-5-KcBg/видео.html
Truly he is THE BEST TEACHER! Like, I genuinely had some Problem Understnading this CONCEPT and found it REALLY HARD-but the Fact that he is SUCH A GREAT TEACHER who can give you the FEEL of the CONECPT makes Alakh Sir Exceptional!
Thank you sir mene app se full syllabus pada hai but ray optics nahi wo mene ncert wallah ka himanshu gupta sir se padha tha but mujhe unke last lecture nahi samjh aa rha toh mene aap se padha ha aur abhi mujhe app se telescope aur full wave optics padne hai thank you sir great teacher really 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏💪💪💪💪💪💪💪🤚💯💯💯💯💯💯💯💯💯💯💯
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें ) Please watch ruclips.net/video/c4Nw-5-KcBg/видео.html
Sir I am always waiting for your video. 😊😊😊. In my whole life, you are the best teacher. Your teaching style is mind blowing. Ekdam heart touching h sir. FEEL aa jata h. ☺☺☺☺☺🤗🤗🤗😍😍😍😍
I have studied optical instrument from 2 teachers one is local and two online. But no matter how much I revise a hoardes of doubts were there which kill the interest in the topic. But after studying them from him I don't even need to revise the notes. All formulae and concepts are like permanently printed in my mind. I can even teach this topic better than many teachers. Thank you sir you're the God of Physics. 🙏🏻🙏🏻🙏🏻🙏🏻❣️❣️❣️❣️
Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
Download the App from Google Playstore ( bit.ly/2SHIPW6 )
LAKSHYA Batch(2020-21)
Join the Batch on Physicswallah App bit.ly/2SHIPW6
Registration Open!!!!
What will you get in the Lakshya Batch?
1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey.
2)Live Classes and recorded Video Lectures (New, different from those on RUclips)
3)PDF Notes of each class.
4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.
5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.
6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)
7)In case you missed a live class, you can see its recording.
8)You can view the videos any number of times.
9)Each chapter will be discussed in detail with all concepts and numericals
10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.
****Test Series for XI & XII****
We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.
=========================================================
For PDF Notes and best Assignments visit @ physicswallahalakhpandey.com/
Follow us on: Instagram instagram.com/physicswallah/
Facebook: facebook.com/physicswallah
===========================================================
12th Chapter 9 : Ray Optics 01 : Introduction & Reflection in a Plane Mirror JEE /NEET
ruclips.net/video/_nGZGo4gHGo/видео.html
Ray Optics 02 : Number of Images formeed by Two Plane Mirrors JEE/NEET
ruclips.net/video/xLMFyXXUfTs/видео.html
Ray Optics 03 : Velocity in Plane Mirror - Velocity of Object & Velocity of Image JEE/NEET
ruclips.net/video/-zjwlf1sPtQ/видео.html
Ray Optics 04 : Spherical Mirrors: Introduction :Focus ,Focal Length & Focal Plane - Sign Convention
ruclips.net/video/NdJEdh3xC2Y/видео.html
Ray Optics 05 : Image Formation by Concave & Convex Mirror for Different Position of Object JEE/NEET
ruclips.net/video/iEMPrqdGPMU/видео.html
Ray Optics 06 : Mirror's Formula -Derivation for Concave & Convex Mirror +Basic Numericals + Concept
ruclips.net/video/bSxWxqfhIYE/видео.html
Ray Optics 07 : Magnification - Magnification & Mirror's Formula Best Numericals JEE/NEET
ruclips.net/video/P2pLDPj-DWk/видео.html
Ray Optics 08 : Combination Of Mirrors - Concept of Virtual Object JEE /NEET
ruclips.net/video/GLBzqqpcRF4/видео.html
Ray Optics 09 : Velocity in Spherical Mirrors - Velocity Of Object & Velocity Of Image JEE/NEET
ruclips.net/video/IHL0rxbPWJo/видео.html
Ray Optics 10 : Refraction Of Light : Snell's Law & Refractive Index JEE/NEET
ruclips.net/video/VimYgbSw28g/видео.html
Ray Optics 11 : Real Depth and Apparent Depth - Complete Concept with Best Numericals JEE/NEET
ruclips.net/video/rUi_chxd_qE/видео.html
Ray Optics 12 : Refraction - Shift through a Glass Slab : JEE/NEET
ruclips.net/video/18DZxFMlNqE/видео.html
Ray Optics 13 : Critical Angle and Total Internal Reflection - TIR - JEE/NEET
ruclips.net/video/GIv3PN9vcR8/видео.html
Ray Optics 14 : Refraction through Prism : Concept , Numericals & Minimum Deviation Case JEE/NEET
ruclips.net/video/DnC5-gM81qc/видео.html
Ray Optics 15 : Refraction from Spherical Surfaces - Formula - Derivation and Numericals JEE/NEET
ruclips.net/video/SZm0KLuRpKI/видео.html
Ray Optics 16 : Lens - Introduction : It's Types , Optical Centre , Focus , Focal Length JEE/NEET
ruclips.net/video/-K9yueGZ5pI/видео.html
Ray Optics 17 :Image Formation By Convex and Concave Lens for different Positions of Object JEE/NEET
ruclips.net/video/jJB4roc5n2E/видео.html
Ray Optics 18 : Lens Maker's Formula - Derivtion and All Types of Numericals JEE/NEET
ruclips.net/video/KYHt5Dxza5Y/видео.html
Ray Optics 19 : Magnification - Magnification & Len's Formula with Best Numericals JEE/NEET
ruclips.net/video/_E_6EcA6Kr4/видео.html
Ray Optics 20 : Combination of thin lenses in Contact II Cutting Of Lenses II Power - JEE/NEET
ruclips.net/video/8i1_zA336Pc/видео.html
Ray Optics 21 : Silvering Of One Surface Of Lens - Silvered Lens JEE/NEET
ruclips.net/video/3eX52D-7G80/видео.html
Ray Optics 22 : Microscope - Simple Microscope & Compound Microscope - JEE/NEET
ruclips.net/video/-QIximwdKYI/видео.html
Ray Optics 23 : Telescope - Refracting Telescope & Reflecting Telescope JEE/NEET
ruclips.net/video/n8nCGAg3AuU/видео.html
Tysm Sir ..
Physics Wallah - Alakh Pandey Wow
Thank u sir ur the best
Done
Sir ab b hi sine galat ho rhe hei mujse
0:30 introduction and near point
6:36 visual angle (very imp for magnification)
11:15 magnification of microscope
14:20 simple microscope
25:45 special case
40:00 compound microscope
1:00:30 summary and formula discussed in lecture
1:03:00 numericals 🤔🤔
Hope it helped you 😇😇✌
You cannot replace ahmed khan
Only legends will understand
Bahut Hard
@@sankalpangira matlab??
@@sankalpangira true
@@sankalpangira Expectations always Hurt
Noting is easy as it seems it takes longer than expected if something has to go wrong it will go wrong and at the worst possible moment
00:00:19 - 00:06:09 - Introduction and Least distance of distinct vision
00:06:24 - 00:10:52 - Visual angle
00:11:04 - 00:13:59 - Magnification of Microscope(basic formula)
00:14:15 - 00:25:30 - Simple Microscope
00:25:43 - 00:33:00 - Mathematical derivation of formula for Maximum magnification (simple micro.)
00:33:00 - 00:36:26 - Mathematical derivation of formula for Normal adjustment (simple microscope)
00:36:48 - 00:40:18 - Summary for above topics
00:40:26 - 00:54:06 - compound microscope
00:54:26 - 00:57:30 - Mathematical derivation of formula for Maximum magnification (compound micro.)
00:57:40 - 00:59:22 - Mathematical derivation of formula for Normal adjustment (compound microscope)
00:59:30 - 01:00:14 - Length of compound microscope
01:00:28 - 01:02:50 - Summary for above topics
01:03:17 - 01:10:45 - Question No. 1
01:10:50 - 01:21:42 - Question No. 2
Thnx mate
Thanks sister
Thank you so much dear 💝
Thx dude
Thx yrrr
😘😘😘😘😘😘😘😘😘😘
The only RUclipsR never says to like share and subscribe
Still he has more subscriber😎😎😎😎😎😎😎😎😎
The power of physics wallah ...
Sir please take care of your health.....
First aapki health then video😘😘😘😘😘😊😊😊😊
Ha beta sahi bole par jo pahile jp Sir class me padhaye hai ushe bhi padh liya Karo
Yesss
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें )
Please watch
ruclips.net/video/c4Nw-5-KcBg/видео.html
Today it has been almost 4 years since this lecture was uploaded , See what he was at that time and what he is now , this shows us that hardwork never goes in vain
At 48:28 why is Ue not negative plzz tell😢😢😢😢😢
@@kalpanapathak2769it was (-A'B')/(-Ue) so he wrote it like A'B'/Ue
The man who taught Physics to the whole of young India.😌 Trust me Sir, I have joined two coaching institutes(one physical, other dlp) but none made me understand Ray Optics as clearly as you did. You’re the best in your field. I have a lot of respect for you. God bless you Sir🥰
heard of satheesh sir of universe???
Dil se dua sabki taraf se "GOD BLESS YOU SIR "
ruclips.net/video/l9ztBnqy-NA/видео.html
Sir in Pakistan and
Thanks!❤
Sir you proved the all the moral lessons I read in books "HARD WORK IS THE KEY TO SUCCESS", "NO PAIN NO GAIN " , "WHERE THERE'S WILL , THERE'S ALWAYS A WAY" , "BELIEVE IN URSELF" and there are many that you've proved. Lots of love for u sir.❤❤❤❤
I am here to just remember my old memories... Last year i was in 12th and i prepared my physics from alakh sir❤️❤️❤️❤️❤️
kitne marks aye ? physics m to jarur acche hi aye honge
@@rahulkhinchi3541 100 inphysics all because of alakh sir❤️❤️
@@bkmehra7798 wow goob bro 👌
@@rahulkhinchi3541 thnx sister 🙏🙏
@@bkmehra7798 u are lying
28:45. Motivating himself. No one is there to motivate him at night alone in room.
This justifies what sir used to say motivation is in yourself.
U r inspiration sir❤️
Bhai inspiration ki spelling to sai likh dete
ARYAN RAAZ everyone makes mistakes. chill.
@@aryanraaz119 bhai tumne bhi toh apna comment edit Kiya spelling theek krne ke liye🤫🤭🤣🤣🤣
@@aryanraaz119 Tumhari bhi to sahi ki spelling galat hai . Just kidding!!!😀😀😊😊
@@aryanraaz119 eenhi bato mai rh gye
This sir deserves a award, like seriously what a legend
Alakh sir- teacher who can take doubts without asking 🥰
Physics wallah is best👍👍
right bro i agree with u
Yeah, he is just unbelievable
Bro Sir ka assiment, open nahi ho raha hai please help
Right
Ekdm Dil ki baat bol dii Bina bole doubt jaan jaate he alak sir
I have never found such teacher ,itna acche se sir btaaya aapne ki hr question 4-5minutes me solve sir NCERT ke questions toh sbse easy ab LG rhe
No one can defeat alakh sir in physics..
World best teacher in physics 🧡😊
A great teacher for those who can't bear coaching facilities... Salute to such a great soul
?? From where u r... ips??
@@Supriya-vz9dt Ranchi
And you???
@@kumkumrani4856 indian public school????
No
28:45 "isko clear kar kehi jayenge😍" waa sir was Kya motive hi aapki,love u sir😘
I'm a jee dropper for 2022 just here to learn microscope which other teachers failed to make me understand 😅
Thank you sir once again ❣️
same bhai...
Chemistry kaisa chal raha hai?
how many marks u got last year in jee mains for4 shifts plz reply
@@prashanthkumar0 how many marks u got in mains last year by calculation?
Me to ab padh ra hoon 2nd drop
Ho gya na tumhara 🤨?
He is the best....no comparison... Couldn't find a better teacher than him...he desrves highest respect...all love and wishes to you sir🌠
Time Stamps -
00:00:19 - 00:06:09 - Introduction and Least distance of distinct vision
00:06:24 - 00:10:52 - Visual angle
00:11:04 - 00:13:59 - Magnification of Microscope(basic formula)
00:14:15 - 00:25:30 - Simple Microscope
00:25:43 - 00:33:00 - Mathematical derivation of formula for Maximum magnification (simple micro.)
00:33:00 - 00:36:26 - Mathematical derivation of formula for Normal adjustment (simple microscope)
00:36:48 - 00:40:18 - Summary for above topics
00:40:26 - 00:54:06 - compound microscope
00:54:26 - 00:57:30 - Mathematical derivation of formula for Maximum magnification (compound micro.)
00:57:40 - 00:59:22 - Mathematical derivation of formula for Normal adjustment (compound microscope)
00:59:30 - 01:00:14 - Length of compound microscope
01:00:28 - 01:02:50 - Summary for above topics
01:03:17 - 01:10:45 - Question No. 1
01:10:50 - 01:21:42 - Question No. 2
I did not attend my online classes and come here to understand concepts thankyou so much sir 🤩🤩🤩
Me also..🙂🙂
@@nandini9609 me also
I also
Thank you so much sir... I have started leaning hindi just to understand your videos.. Thank you so much... You are my dronacharya...
Batch of 2023-24 😊
Here😄
Here too
Present sir❤
Me too bro...
Seex
00:00 (simple microscope)
41:13 (compound microscope)
🙂🙂🙃🙃
My teacher ask me : what do you want to become? 😊
Me: i want to become just like physicswallah "Alakh sir🙏"
Mam : who is he? 😠
Me: mam aapki glti nhi h !! 😂
Love u sir from uttrakhand💗
I'm also from Uttarakhand
Same situation from me
Issmai tumhari galti nahi hai yai dialog mere maths Kai teacher ka bhi hai
Tum sab meri hi galti ho
Hey, Does Uttarakhand teachers teach really good??
Just want to know
Download PDF Notes of this @ physicswallahalakhpandey.com/class-xii/physics-xii/09-ray-optics/
Sir please complete aldehydes chapter
Sir which will be the next chapter ???
Sir please complete physics first 🤔🤔🙏🙏🙏🙏
Sir please complete aldehyde ketone 🙏🙏🙏🙏🙏🙏🙏🙏
Sir please increase video friquency
Hello Alakh Sir Ji ,my name is Ummar and i am from kashmir.I read all my 11th grade from you and i am also read 12th grade from you,Sir you encouraged me and all your students .We found 11th and 12th is easy to read because of you.We also prepared for board exams as well as competative exams just because of you .Finally sir you are our Backbone....!
Jiska interview hua h abhi wo umar?
Itna acha content.........🥰🥰🥰🙏🙏🙏
Mere gaon me physics ki coaching ki cost 20,000 annually h......🙄😳😳😲😲😳😳😳
I can't afford😥😥😩😩😩😩😩😩😩😩😩😩😩🥺🥺😭😭😭😭😭😭😭😭😭😭😭😭
Aur physics wallah sir free me itna valuable content de rhe h hme
Hats off sir🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
U r so respectful and love u sir😍🤩😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘♥️♥️♥️♥️💕💕♥️♥️♥️
Thank u so much alakh sir 🙏🏻🙏🏻
Bhai tumhari to sirf 20,000 annually thi , hamari 2019 me jee ki coaching , 1.5 lakhs annually thi , I am from Kanpur
@Meena Kumari , Alakh sir legend hai ❤️🙏🏼
Ye bahut gyada na ho gaya 🤔
I beleive In Alakh bhai.....He is the One and only guy..
Now he have many channels with good offline teachers,but still we come back to his old videos.
Yeah....he is something different from others
But i love method of mr sir too 😍😍😍🤩🤩🤩🤩🤩🤩😁😁😁
Bro is this lectures sufficient for jee advanced?
Soo trueee! He's simply gold❤❤
@@prashantpandey8579 is for the concepts but you have to practice question and pyqs
@@prashantpandey8579 pyq and questions karlo saath me
18:30 Already Predict the meme "Shweta"
😂
👍😮😎😀
🤣
Its my humble request to all the people who comment for praising sir that sir pichle 2yrs se youtube mein hain aur unki har video mein unki taareef ki jaati hai.... He knows he means a lot to us.... In comments ki wajah se sir un comments ko nahi padh paate jo actually bahut zaroori hain... So i request to all of u ki comments mein sirf doubts aur important information hi share kare🙆♀🙆♀🙆♀🙆♀🙏🙏🙏
I agree
u r right
I agree with you but sb ko faltu bakwass krna ye sbhi video km comment jayada krne aate hai
@@sourabhkaushik7687 🤣🤣🤣🤣true...
@@sourabhkaushik7687 okk 💯%true🤣🤣🤣100tka sahi bola🤣🤣😂
Sach m yrr jbb bhi meko lgta hai ki abb physics pdhna hai toh meko sbse phle alakh sir hi ydd aate hai mtlb jbb bhi lgta hai iss topic se kuch smjh nhi aaya m RUclips open krta huun aur yaha aata huun sir m aapki life time bhi taareef krrun toh meri life km pd jayegi kyuki aap itni tareef deserve krte ho jo koi andaza nhi lga skta
Sir is going to cross 2 million 💐💐💐
Deserves 2miLlion likes
Bhai, What's your SA-1 (Half yearly) Physics score?
@@gangwargangwar2081 I got 77 out of 80 in sa1 just because of a mathematical mistake.
Edit: I am in class 10 I watched this video because I'm an jee aspirant so wanna complete easy topics of 11th and 12th so that I can focus on jee
@@gangwargangwar2081 Studying by Sir's videos made me achieve this good score in current class and also study side by side with iit foundation series of pearson so that I can focus on jee
The exact same question without a single change of magnifying power 1:07:00 come in today cbse board exam .....Thank you soo much sir ..
Yes ✌✌
last question of case study
It completely feels like as if you are sitting in any coaching institute or any classroom when you are watching Alakh Sir's lectures inspite of being at home.
As soon as I saw the notification of physics wallah, it brings smile on my face 🥰🥰🥰🥰🥰🥰🥰🥰🥰
Very true buddy
Yes same here also
@@tarunanand1883 v
Yes
Kiran budhathodi might be the douchiest name in the history of this planet
I studied microscope from more than 3 teachers and to tell you all, only Alakh sir has the capability to explain to the level ki sab clearly samajh aaye... Jab koi topic samajh na aaye physics mein, kahin jaane ki zarurat nahi... Just open RUclips and search Alakh Pandey with the topic name.... aisa kuch hai hi nahi jo aap samajh na payein when he teaches❤️❤️
Far batter than digit smart borad . very peaceful lecture . man ko bahut shanti milta hai
Thank god you are back!!!
The notification just put a huge smile on face.
Alla re alla , physics wallah👍👍👍😎😎😎
Alla re alla mumbai indians
@@jas4111 jaa be nikal yahan se
❤Simple Microscope (summary)
36:43
❤Complex microscope (summary
1:00:28
Hey guys enjoy as much as u can in your 12th class as these days will never come again i miss my 10 i miss my 12 even though my classmate mean nothing to me but i still miss them do your studies but find 1-2 hours a week to enjoy
Yes bro
Happy teacher's day sir
U are the world best teacher 😍
@Genius Army hlww
@Genius Army kaise tips cahiye tumhe
SIR SHOULD BE GIVEN A NATIONAL AWARD......
Whatever I have learned in physics till now only from alakh sir❤❤
1:02:16 sir magnification is v°/u°×D/u(eye)
Even we feel connected to you sir, really not just saying. Jab mujhe sach me koi point samajh me nai aata hai usi time aap keh dete hain "Nai aayaa samajh? Ye dekho dobara". If this is not connection, then I don't know what is.💓🙏🏻
I lack words to express your hardwork, dedication and honesty towards your work.👑
Teacher like you is the dream of every student out there!
1:05:00 Mein ye question kar ke gya tha, 12th board 2021-2022 Set 3 Mein Chap gya 😍, Alakh Sir ke Purane Lectures Gold hai.
Sir aappp sabke physics wallah nhi... Uppar wallah hoo❤❤🥰
👍👍👍👍👍
😂😂😂😂😂😂
How lucky we students are who have the educator like Alakh sir 🔥🔥🔥🔥
Bro kab se exam hain😊
how lucky whathh unit for that
Still students watching this in 2024..
Yes
Old is gold bro
Yes
Yes
Will gonna watch after 2024
Almost 2 Million 💯💯thanks for sharing exact concepts with visualization of we kids subjects which majority of us used to fear from but not anymore because of Physicswallah! 😊
4millions completed today!!!and I'll complete Ray optics today🥳🥳
I wish i also have done it😫😫😫
Bro mujhe bhut tough lg rha h ye chapter 😪😪😪
Kya karu😒😒
11 lecture ho gye hain complete 😞😞😞
@@darakhshayasmeen bahoot lengthy hai yaar
but i completed it after so many days
all the best!! you can do it!
@@prasuna7476 ha abhi 19th lecture dekh rhi hu😊
😐 anybody in 12th ( 2021-2022 )
@@inhuman2 yea
Recently brought his Modules for Class 12.Seriously the content is 💯💯
Physics=Alakh sir ♥️
Just one thing to say sir, just keep loving Physics! You're doing for this nation.....
Mai toh keh rha hun sir election mein khade ho jao pakka jeet jaoge! Itna selfless work toh koi Neta bhi nhi karta😁
Hiiii
bro tumne notes banaye h kya ray optics ke agr banaye h to plz 8927056066 (whatsapp no.) pe bhej dona
Sujal...use sir's notes
Wahi.... Sahi bola 😂
Sahi kha bhai
Exactly after a week I'll be writing NEET 2024 which is going to be my 1st attempt. Really anxious at the moment. Came here to listen to sir and calm myself down since he has been an integral part of my NEET journey. Hope everything goes well and everyone who has worked hard for this exam gets the desired results✨️
how was it?
@@shreya63338 got a gmc in my state
Happy teacher's day
Sir with a lots of respect 😊😊😊😊
Hello Sir, this is the first time ever.. I'm commenting.., I'm really amazed with the way you teach, I always wanted to tell you how amazing you are.. but never had my own channel to do so! Finally I'm thanking you Sir.. aapki teaching super duper Aasman se oopar wale level ki hai! Lots of respect for you Sir❤️☺️
Why u dont know typing yet
Just *joke*
@Beluga 🤣🤣haan
@Beluga rong duhhh
@Beluga 🥲are ese expression jese ...duhh
@Beluga 🥲haryana
Alakh sir makes everything seem so easy 😮
this topic confused me when i first learnt it in class. now its crystal clear
Who imagined that he will the man owning a company worth billions….amazing sir❤❤
Wow....the best Ray optic lecture I have got in my life...what a detailed explanation....just love you sir ❤❤
No views 86 likes this is the power of physicswallah
Its not power of physicswallah but a glitch of youtubewallah😉😉
Hydrogen chapter previous years best questions video ( पहलेअलख सर का वीडियो देखें फिर ये questions practiceकरें )
Please watch
ruclips.net/video/c4Nw-5-KcBg/видео.html
Keep up bro, I am a teacher and a small RUclipsr myself and I really appreciate what you are doing. 👍
Thankyou sir very much I was confused in the terms and the cases ..
After watching the lecture I got the feeeel of the topic..🎉
Thq very much..❤❤❤
Lots of love sirji. Sach me haathi jaise concept ko machar bana diya woh bhi bina microscope ke🤣🤣🤣
Jokes apart really appreciate your talent of explaining complicated concepts in sucha manner.
Bhai microscope haathi ko whale bana deta hai macchar nahi🤣🤣🤣
@@gururajarao4690 😂😂😂mai isika intezaar ki koi meri glti point out kre lekin koi notice hi nhi kiya.
You're the first
18:21 - Ankit loves shweta....😂
Ye couple toh mere class me hai they will be very happy sir ne unka naam liya 😂😂😂😂😂😂😂😂
Oh really 😂😂?? Do they have the same names ??
@@vaibhavdasgupta638 yeah
@@vaibhavdasgupta638 Bhai Nahi degi...
@@SSBCOMRADEaadi you are so clever 😂
😅😅
Aap ke jesa to aur koi nahi sir...
10k views in 15 minutes
This shows what a great teacher u are👏👏👏👏
Sometimes I feel like,Sir ke haath me geometric tools Lag rakhe hai, lines bilkul straight Hoti hai and curves bilkul accurate 🔥🔥
It's too good.......
Really appreciate you😃😃
Yes 😊
Sir, Advance congratulations🎉🎊🎉🎊 for 2million subscribers.
What a beautiful ❤️ line sir 35:37. concept is Crystal Clear❄️ sir.
18:20 this is that swetha from zoom call and she was talking about ankit in that zoom meeting😂😂
how do you know that he was ankit
@@shaileshraj4807 click the timestamp and watch again 🙃
@@sujaynaidu598 yaaa bro its funny
Swetha mic mute krle 😂😂
lagta hai Sir ne bhi dekha tha wo video 😂
I'VE BEEN WAITING FOR THIS VIDEO ALL MY LIFE
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें )
Please watch
ruclips.net/video/c4Nw-5-KcBg/видео.html
Me too
Paida hote hi ray optics padhna shuru kr diya tha
What????
Hi plz reply
Really it is a best video on optical instruments 😁😁😁😁😁
Hn yr
shi m yaaar :)
Yes
Truly he is THE BEST TEACHER! Like, I genuinely had some Problem Understnading this CONCEPT and found it REALLY HARD-but the Fact that he is SUCH A GREAT TEACHER who can give you the FEEL of the CONECPT makes Alakh Sir Exceptional!
Kon Kon apni puri class 12th ki physics ALAKH SIR kai sath finish karega 👍👍 THANKS SIR 🙏🙏❤❤😊
Sounds of insects in this video show that this video is made at mid night 🙏Sir aap kitni mehnat krte ho Hamare liye❤❤🙏Love uh Sir ❤🙏
Yess bhai sir ke jaisa koi nhi h
I also noticed that
Sala ham yahan gyan le rahe hai aur tum yaha khali insects ki aawaj sunane aate ho ? 😂😂
The way he explains is just "chef's kiss""✨✨
huh?
@@rajatdwivedi2040 chef's kiss is a phrase to define highly acknowledgeable thing
You are simply amazing!☺️
Sir you are the best teacher of Physics 💪 and chemistry in the whole world.
Thank you so much sir 🙏
Thank you sir mene app se full syllabus pada hai but ray optics nahi wo mene ncert wallah ka himanshu gupta sir se padha tha but mujhe unke last lecture nahi samjh aa rha toh mene aap se padha ha aur abhi mujhe app se telescope aur full wave optics padne hai thank you sir great teacher really 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏💪💪💪💪💪💪💪🤚💯💯💯💯💯💯💯💯💯💯💯
Please ek cheej bta do, chapter 11 se 14 me 12th part 2 me kitne lecture hai... 🙏🙏🙏🙏🙏🙏
2000 views in 5 minutes 😁
4000 views in 10 minutes 👍
That's crazy 🤙
Aditya rawat RUclips only count the views if you watched it for more than 30 sec
Hydrogen chapter previous years best questions video ( पहले अलख सर का वीडियो देखें फिर ये questions practiceकरें )
Please watch
ruclips.net/video/c4Nw-5-KcBg/видео.html
Aditya you are from UK?
@@DineshSingh-oc1ub yes.
But i live in Punjab
@Ansh Dogra 😂
28:45...Sir ne dil jeet lia bilkul... I wish every teacher could think like that🙁... Genuinely I have never enjoyed physics this much really 😌..
Largest educational RUclips channel with subscribers...... 🤩👍👍
Sir you are the best teacher 💪💪 since i have seen throught my life
Sir pls start semiconductors after this🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕
Yes plz sir
Optical instruments पूरे youtube se pdh liya... Khi samj nhi aaaya..... Kam se kam 6 ghnte gva diye.....
Finally i remember my alakh pandey sir.....⚡
World Best teacher ever seen in my life
World worst teacher ever seen in my life
@@ayushi1145 q bhai
The like here shows the respect towards our sir 😍😍
....
Sir 1:20:38 u⁰ should be (- 2.5 cm)
Mind Blowing Sir😱🤯
Sir I am always waiting for your video. 😊😊😊. In my whole life, you are the best teacher. Your teaching style is mind blowing. Ekdam heart touching h sir. FEEL aa jata h. ☺☺☺☺☺🤗🤗🤗😍😍😍😍
I think alakh sir is the one who teach physics clearly in the you tube 🎉❤
🎉
Sir really. The way u teach each and every concept is amazing..u really make us feel physics...god bless you sir...😊😊
Dil se shukriya Sir...❤❤... Lecture is awesome as always... 😊😊
Everything is temporary but "mitarde" is permanent... 🙌❣️
I have studied optical instrument from 2 teachers one is local and two online. But no matter how much I revise a hoardes of doubts were there which kill the interest in the topic. But after studying them from him I don't even need to revise the notes. All formulae and concepts are like permanently printed in my mind. I can even teach this topic better than many teachers. Thank you sir you're the God of Physics. 🙏🏻🙏🏻🙏🏻🙏🏻❣️❣️❣️❣️