Astronomical Telescope || Ray Optics || class 12th || Physics handwritten notes

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  • Опубликовано: 18 дек 2024

Комментарии • 269

  • @PHYSICSwithUmeshRajoria
    @PHYSICSwithUmeshRajoria  Месяц назад

    🎯For Physics Chemistry Biology Notes📚 Download App⬇ play.google.com/store/apps/details?id=com.hesvth.fjobsyoo

  • @hradayyadav8137
    @hradayyadav8137 Год назад +122

    Unfortunately I have found you today! One day before my physics exam, you would have been really helpful for me but I'm not lucky enough to learn through your impeccable lectures!! 🙏🏻

    • @mcdcyborg1877
      @mcdcyborg1877 Год назад +9

      Fortunately*

    • @Physicschemistrymaths-w2f
      @Physicschemistrymaths-w2f Год назад +11

      ​@@mcdcyborg1877 unfortunately. Here mean that he get sir's lecture one day before exam . He want to say that it was pretty better if he get this opportunity. May be 2 to 3 months before exam

    • @teenpatti8294
      @teenpatti8294 Год назад +1

      ​@@Physicschemistrymaths-w2fexactly

    • @RITESH_KUMAR_SINGH193
      @RITESH_KUMAR_SINGH193 Год назад +2

      ​@@Physicschemistrymaths-w2fmam
      He should have say like I am unfortunate that I Got this video just 1 day before my exam

    • @BZM005
      @BZM005 11 месяцев назад +4

      Just add an" only "before "found " and youll be sorted

  • @IItiangoals
    @IItiangoals 9 месяцев назад +11

    They are lucky who attend coaching of yours ❤ Keep going Sir.

  • @DA-nk1ug
    @DA-nk1ug Год назад +97

    SIR YOUR GREEN BOARD IS FAR BETTER THAN DIGITAL BOARD.
    Thank you so much sir 🙏🏻

  • @Shail821
    @Shail821 Год назад +38

    Jis tarah aap sir hath se diagram bana ke padhate hai to jyada samjh aata sabhi dought clear ho jata hai dubara video dekhne ki jarurat nhi hoti ,your this struggle really hard with chalk,duster

    • @oganessonstudios
      @oganessonstudios Год назад +1

      Shayad tereko doubt ki spelling me hi dought hai 😆

    • @notatime8467
      @notatime8467 Год назад

      @@oganessonstudios 😅

    • @notatime8467
      @notatime8467 Год назад

      lagta hai bhai tu bhi 6march ki taiyari kar raha hai 😄😄😄

    • @ruerue0066
      @ruerue0066 Год назад

      ​@@notatime8467 mai kr ri hu
      Drr lg raha hai bhaii

    • @notatime8467
      @notatime8467 Год назад

      @@ruerue0066 sabhi average baccho (included me) dar lag raha hai

  • @Twinkle.Chouhan
    @Twinkle.Chouhan 9 месяцев назад +4

    Very very thank you so much sir❤
    I am watching this video at 3:00 am

  • @yanshikakoshta6980
    @yanshikakoshta6980 Год назад +14

    Most appreciable lectures 👍👍
    Makes concept crystal clear...

  • @yuktinandwana8833
    @yuktinandwana8833 Год назад +13

    Sir I don't know why you're subscriber are less .but one day it cross 1 million 👍😀 hope this day come soon . 🥺 thankyou so much sir for providing best teaching ever ... (before 1 day of exam we have to watch you're lec for Crystal clear the concepts tution notes is not sufficient for revising ( need your lecture )😀👍🙏
    😀Once again🙏🙏thank you so much🤗
    😊😊🤗We pray this yt channel goes cross 1 million subscriber.🙏🙏

  • @jaatraj3028
    @jaatraj3028 Год назад +2

    Sir you are best teacher aap board pe padate smj aata or teacher ki class me timepass bhi nahi krta sirf pdane pr focus rhakte sir you great

  • @girdharirawat8245
    @girdharirawat8245 2 года назад +170

    You deserve more than physics wala

    • @Nordstrom69
      @Nordstrom69 2 года назад +4

      Truly

    • @Nordstrom69
      @Nordstrom69 2 года назад +8

      @Historical Info...no 😂

    • @Doraemongadget9898
      @Doraemongadget9898 2 года назад +1

      Bro.. Both deserves the way they do

    • @artsy223
      @artsy223 2 года назад +8

      He can't teach chemistry
      So , no .

    • @xenon6138
      @xenon6138 2 года назад +4

      @@artsy223 but alakh Pandey chemistry is not complete

  • @niloysarkar7887
    @niloysarkar7887 Год назад +2

    Sir me west Bengal se hu, apka lecture bohat achha hai. Kas apka jaise teacher hamara eyha hota

  • @shreyatiwari2940
    @shreyatiwari2940 Год назад +6

    Thankyou sir for clearing every concept... Your videos are really very helpful for me before my physics exam
    Tommorrow'is my physics exam nd I was finding difficulty in this derivation nd you made it so simple nd clear
    Thankyou sir ❤️🙏

  • @ayushkumarthakur2699
    @ayushkumarthakur2699 2 года назад +10

    Crystal clear concept😀😍

  • @Bhagwatbhakti2857
    @Bhagwatbhakti2857 Год назад +7

    you made this topic super simple👏thnx sir

  • @Lab5technecian
    @Lab5technecian Год назад +4

    Sir aap bahut achha se explain karte hai .
    Thanks sir 🙏😎🙏 For explanation of the Astronomical Telescope 🔭

  • @indiangamingff9003
    @indiangamingff9003 10 месяцев назад +2

    Good experience of teaching of physics ☺️

  • @chaixaioqi3019
    @chaixaioqi3019 3 года назад +7

    Sir khy app ncert physic class 12 ka question bhi kra diziye plzz 🙏🙏🙏sir.।

  • @universalpublicschool631
    @universalpublicschool631 Год назад +2

    Sir I like ur simple and meaningful explanation ❤ no time wasting and only padhai🙏🙏🙏

  • @indra1838
    @indra1838 2 года назад +2

    18:45 isi baat ko dhund raha tha bas aapne boli yeh baat thnx

  • @MadhuChhonkar
    @MadhuChhonkar 10 месяцев назад +3

    Nice explanation ..... Thanku sir❤❤

  • @madagalalavaraju6046
    @madagalalavaraju6046 Год назад +3

    Sir M=-fo/ue so (1/ue=-1/Fe[1+Fe/d]
    Then substitute in M
    M=-fo(-1/Fe[1+Fe/d])
    M=fo(1/Fe[1+Fe/d]
    M=fo/Fe[1+Fe/d]

  • @aayushhh24gamer82
    @aayushhh24gamer82 Год назад +4

    Sir believe me you are legend 👑

  • @rohanbhardwaj-b7w
    @rohanbhardwaj-b7w 11 месяцев назад +1

    The best teacher on RUclips so far

  • @sukhvindergill7691
    @sukhvindergill7691 2 года назад +2

    Sir your teaching is so good

  • @scripted_shorts_by_adi
    @scripted_shorts_by_adi Год назад +6

    Sir aashirwad 😅

  • @smashed_armaan_
    @smashed_armaan_ 9 месяцев назад +15

    Me watching at 4 march 2024 today is my physics exam time 3.18 am hope for the best

    • @Khy6336
      @Khy6336 9 месяцев назад +1

      Bro I didn't even sleep today it's 7:7am
      And I've only studied ch 12😢

    • @RohitSingh-gs7wq
      @RohitSingh-gs7wq 9 месяцев назад +1

      us bhai us @@Khy6336

    • @ammarsaqlain
      @ammarsaqlain 9 месяцев назад +1

      Haha us bro us 2024 batch is hopless i just pullen an all nigher and still am studying with me the best too and wish y'all the best too

    • @Khy6336
      @Khy6336 9 месяцев назад

      @@ammarsaqlain I failed 😭🥺

  • @raunakgaming3054
    @raunakgaming3054 Год назад +3

    what a concept of your teaching sir owsome ❤️❤️❤️

  • @Verma-n1n
    @Verma-n1n 3 месяца назад +1

    Thanks sir me aapki vdo dekhti or physics me meri shi makes aate h 😊😊❤🎉 sir aap bhut aacha pdate ho 🎉🎉 Thanks sir 😊

  • @anshuligoel2277
    @anshuligoel2277 10 месяцев назад +1

    This teacher is soooo good.

  • @abhisingh5110
    @abhisingh5110 Год назад +3

    Finally ! I am expert in this topic thank u sir dil se 😍

  • @Anny_4959
    @Anny_4959 10 месяцев назад +1

    I study physics from you for the exam and you teach very nice ❤❤❤❤❤ thank you 😊

  • @adarshsingh-hu8vr
    @adarshsingh-hu8vr 2 года назад +16

    Sir I really appreciate your Hard work
    You always make me feel quite comfortable while listening to your lecture
    Thnxx a lot sir for your devotion towards us

  • @vikaspandey4639
    @vikaspandey4639 Год назад +2

    Jaldi hi apka million me subscriber honge🙏

  • @gautampranav16
    @gautampranav16 9 месяцев назад +1

    Sir maine aapni 12th physics sirf aapse pdhi thi or kl maine aapne physics ke board exam mai 56/60 score kia hai. Thank you sir thanks a lot

  • @manvigill1272
    @manvigill1272 2 года назад +2

    It's very helpful for me sir thankyou so much sir 🙏🏻🙏🏻

  • @tukijhaaa
    @tukijhaaa Год назад +7

    This is the first time I am commenting ever. Your teaching style is just so commendable. Sir, Bhagwan kre aapka subscribers grow krne lage with speed of light. Thankyou so much sir.🙏🏻

  • @Sunaharajput04
    @Sunaharajput04 2 года назад +2

    Really appreciating sir .. thank you sir 🙏🙏

  • @sanveerbinner7052
    @sanveerbinner7052 2 года назад +1

    Your are best than my teacher sir ! Thank you sir

  • @MR.SARAN_07
    @MR.SARAN_07 2 года назад +1

    Your teaching style very easy 🔥🔥🔥🔥 I like you

  • @abhisheknayak3071
    @abhisheknayak3071 3 года назад +6

    In Numericals, should be directly put values (u, v, f) into these formulae or acc. to sign convention????

    • @PHYSICSwithUmeshRajoria
      @PHYSICSwithUmeshRajoria  3 года назад +7

      According to sign convention

    • @abhisheknayak3071
      @abhisheknayak3071 3 года назад +4

      @@PHYSICSwithUmeshRajoria sir In previous video of Compound microscope , you told to put the value directly in formula at end of the video

  • @kirpalsinghkirpal5991
    @kirpalsinghkirpal5991 10 месяцев назад +1

    U are god for me becoz tomorrow my final paper hai.....bhut tension a sr 😢

  • @amoslal5008
    @amoslal5008 Год назад +3

    That question was came in 2023 cg board exam thankyou soo much sir

  • @nishankiyadav2074
    @nishankiyadav2074 Год назад +1

    You are gift of god😇😇

  • @Pw-Online-Platform
    @Pw-Online-Platform Год назад +2

    I always watch your videos sir....and I'm glad to say that I understand everything which I don't get in school....since your way of explanation is so clear can you please upload videos on important questions and answer for 2024 board...

  • @princenzoeditz3217
    @princenzoeditz3217 Год назад +3

    Literally this is amazing 👍🏻🚩

  • @samartech5436
    @samartech5436 2 года назад +4

    Amazing teaching 😁

  • @unicron7809
    @unicron7809 9 месяцев назад +2

    Thank you!! :)

  • @ashik11360
    @ashik11360 2 года назад +2

    Thanks sir for your great teaching

  • @rightidea2.266
    @rightidea2.266 Год назад +2

    Thanks sir..🙏🙏
    Mja aa gya..👌👌

  • @radhilnarula5783
    @radhilnarula5783 11 месяцев назад +1

    Thankyou sir i have my preboard tomorrow this video really helped me

  • @aartisinghal4738
    @aartisinghal4738 Год назад +1

    Thanks for this wonderful explanation sir
    Sir aap bhaut acche se diagram bna ke samjhate ho or is se bhaut help milti h

  • @MATHSLOVER.
    @MATHSLOVER. 9 месяцев назад +1

    Kamal ho sir aap kyaa padatao ho sir thanks for your concern

  • @justsomeone1542
    @justsomeone1542 2 года назад +2

    I hit 1k 🦋
    Thank you sir 💟
    It's really helpful 🤝

  • @Ritikraj-it6kq
    @Ritikraj-it6kq Год назад +2

    Really nice explanation ❤️❤️

  • @ѕ45-м3л
    @ѕ45-м3л 2 года назад +2

    SIR UMESH NEWTON ❤️ MAN

  • @sarojkumawat8064
    @sarojkumawat8064 2 года назад +1

    Thank you sir aap bhot acha smjate ho.☺️☺️

  • @krishna-nh3xh
    @krishna-nh3xh 11 месяцев назад +1

    I'm really thanksfull to sir this video is so helpful

  • @visheshpal7353
    @visheshpal7353 2 года назад +1

    Always grt explanation sir ji

  • @pavanpatel7558
    @pavanpatel7558 9 месяцев назад +2

    Sir last Wale magnification formula me -×- =+ve nahi aayga

  • @dhilipb1915
    @dhilipb1915 5 месяцев назад +1

    Thankyou so much sir it is useful for my btech semester

  • @MohammadJameel-sw8lh
    @MohammadJameel-sw8lh Месяц назад +2

    Thnku soo much❤️

  • @ganeshbhatt1579
    @ganeshbhatt1579 2 года назад +2

    Thank you so much sir ❤️🤗..

  • @AdityaKumar-ro5es
    @AdityaKumar-ro5es 11 месяцев назад +1

    Sir aap bahaut aacaha padhate hai.

  • @ajitsaharan3843
    @ajitsaharan3843 2 года назад +3

    Sir length of the telescope 🔭 tube distance between second focal point of objective and first focal point of the eyepiece is called tube length hota h
    It means first normal case me to L= 0 hona chahiye kyunki b/w distance zero h
    Aapne dono cases me plus kyon kiya h

  • @dakshgupta4929
    @dakshgupta4929 2 года назад +3

    Thank you so very much sir for such a crystal clear explanation 🙏🙏

    • @diyaburudi777
      @diyaburudi777 Год назад

      Thanks sir for your amazing explanation ....🙏🙏🙏🙏

  • @Pompishah
    @Pompishah 11 месяцев назад +1

    Sir in special case fe should be taken as negative, as we opposite to direction of incident rays???????

  • @binodkumar967
    @binodkumar967 2 года назад +1

    Very nice 👌 and clear concept.

  • @chandanikumari5456
    @chandanikumari5456 Год назад +1

    Very rich contest sir
    Thanks sir

  • @farooqpoonchi...5799
    @farooqpoonchi...5799 2 года назад +2

    Thnk u so much sir... 👍😊

  • @azharmahmood5115
    @azharmahmood5115 3 года назад +1

    Sir very great explanation thank you sir

  • @saiyedsikandarquadri4222
    @saiyedsikandarquadri4222 2 года назад +13

    Sir, why you always consider D=25, is it a standard value or just an example ?

    • @amanchoudhary8237
      @amanchoudhary8237 2 года назад +5

      Standard value

    • @Saroj123-r
      @Saroj123-r 2 года назад +5

      25 cm is the value within which we can see clear image

    • @milind_purohit
      @milind_purohit Год назад +5

      25 cm is the minimum distance from eye from which we can se clearly

    • @Krishna_Krishnatrey
      @Krishna_Krishnatrey Год назад +2

      Bhai tuje sakth se sakth jarurt ha
      2 ghante physics.
      Rat ko sone ke bad or sone se phale.
      Sory bhai bura mat manio.

    • @milind_purohit
      @milind_purohit Год назад +8

      @@Krishna_Krishnatrey comment 1 year pehle ka h bro abhi clg me hoga vo 😂

  • @mansiverma2066
    @mansiverma2066 2 года назад +1

    Nice explanation sir🙏

  • @RajSingh-fi9wq
    @RajSingh-fi9wq 2 года назад +1

    🙏🙏🙏🙏 all concept clear sir🙏🙏🙏

  • @Akagami4048
    @Akagami4048 Год назад

    14:52 , sir to kitab infinite pe rakhdun ? Phir to nai neend ayegi na

  • @ranjitmohapatra8550
    @ranjitmohapatra8550 3 года назад +2

    Awesome 👌👌👌

  • @lofi__Edits262
    @lofi__Edits262 3 года назад +1

    Well explained. Thanks sir

  • @Raghav00006
    @Raghav00006 2 года назад +1

    Sir aap aacha padhate ho

  • @Priyanshh_rai1
    @Priyanshh_rai1 4 месяца назад +1

    Thank you sir❤❤

  • @sakshilodhi7473
    @sakshilodhi7473 Год назад +1

    Thank you sir.... ❤

  • @tarangseriel-ig6dh
    @tarangseriel-ig6dh Год назад +1

    11:38 and 23:23 check

  • @kalamewarsirahim707
    @kalamewarsirahim707 Год назад +3

    Preparing for boards and watching sirs videos for derivation parts . ❤️❤️❤️❤️

  • @sandeepbhatt6812
    @sandeepbhatt6812 Год назад

    Sir You are super please video on atom and nuclei topicwise

  • @shubhajain9451
    @shubhajain9451 Год назад +1

    Sir ,telescope m dono lens fix ni rehti h ky?
    Jaisa apne microscope m bataya tha ki usme dono lens fix rehti h.

  • @tejasdm1154
    @tejasdm1154 9 месяцев назад +1

    Op sir nice teaching

  • @sanskarichhatra5231
    @sanskarichhatra5231 Год назад +1

    There is mistake in last equation on special adjustment.. you didn't put Ue in negative in lens formula..

  • @arshitamaurya7803
    @arshitamaurya7803 2 года назад +1

    Thnqq sir jiiii 🙏🏻

  • @physicwallahlover.6279
    @physicwallahlover.6279 2 года назад +2

    I like a teacher on RUclips who is Umesh sir .❤️

  • @aaradhyamishra4741
    @aaradhyamishra4741 2 года назад +1

    Outstanding 💯

  • @Jatin_makeup_artist
    @Jatin_makeup_artist 3 года назад +2

    Awesome lecture

  • @pradipshirote9025
    @pradipshirote9025 Год назад +1

    Superb sir

  • @Simratkaursk
    @Simratkaursk Год назад +1

    to sir yahan pr jo final formula aaya hai usme values ke sign put krne hain ya nahin ?

  • @its_me9192
    @its_me9192 Год назад +1

    Is this topic is in syllabus?

  • @rohitmr264
    @rohitmr264 2 года назад +2

    sir lens formula me Ue ki value ko bhi negative put karenge to wo positive ho jayegi na lekin apne Ue ki value ko positive hi put kara hai

    • @JHON1296Y
      @JHON1296Y 2 месяца назад

      Same question

  • @sdparmar12
    @sdparmar12 Месяц назад +1

    Sir you are great kha padhate ho ❤❤

    • @sdparmar12
      @sdparmar12 Месяц назад

      Sirji aap kaha teach karte ho

  • @deepalising6740
    @deepalising6740 2 года назад +1

    Thank you🌹🌹🌹🌹🌹

  • @Unknownnnyt2
    @Unknownnnyt2 Год назад +5

    He is much better than PW 🔥🔥

    • @its_me_gauri
      @its_me_gauri Год назад +1

      kuch bhi 😂😂...Haa ache sir hai ye b btt kyaa mtlb PW wale bekar hai ..ek baar pdhke dekhlo 😂😂

    • @Unknownnnyt2
      @Unknownnnyt2 Год назад

      @@its_me_gauri better than mtlb ye nhi ki pw bekar h aur for ur kind information I'm a student of pw of arjuna batch and lakshay batch

    • @its_me_gauri
      @its_me_gauri Год назад +1

      @@Unknownnnyt2 then you should know about MR sir ...He is one of the best teacher of physics ..And i m also a student of PW Arjuna Neet and Lakshya Neet

  • @gudalraj584
    @gudalraj584 Год назад +5

    Alakh sir is the best ❤️✨💫🌈🌈

  • @AbhishekSingh-cx2zh
    @AbhishekSingh-cx2zh Год назад +1

    2nd wale case me Fe ko -ve kyu na liye ?? Vo left side tha convex lens ke??

  • @Radhaa4
    @Radhaa4 Год назад +1

    Sir normal adjustment me value put karne time last me 1/fe minus me tha na to vo minus me kyu nhi liye thora samjha dijiye na🙏🙏

  • @UNBofficial
    @UNBofficial 3 года назад +3

    Sir Fe is always positive