What is Refractive Index ? CLASS X : CBSE / ICSE : Refraction Of Light 02

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  • Опубликовано: 27 янв 2025

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  • @PhysicsWallah
    @PhysicsWallah  6 лет назад +757

    Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
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    • @story_teller_20
      @story_teller_20 6 лет назад +3

      Sir optical density ka unit ko kya pronounce Kare u ya mu

    • @rajathankigliya5621
      @rajathankigliya5621 6 лет назад +4

      Definitely v will support u sir, u r god for us,

    • @lawliet2263
      @lawliet2263 6 лет назад +6

      Sala bank account ka number kaun deta hai yaaae.......sach mai physics allah ki maa ki chut hai

    • @piyushsingh6977
      @piyushsingh6977 6 лет назад +3

      Physics Wallah - Alakh Pandey #Prayag Raj

    • @kritikachaplot2445
      @kritikachaplot2445 5 лет назад

      @@story_teller_20 its myu

  • @saberahhaldar5296
    @saberahhaldar5296 6 лет назад +3661

    He is the best👌👌👌👌👌👌👏👏👏👏👏👏 without wasting time on stupid subscriptions ...he starts the explanation he is a very good teacher

  • @i_vaishnavi.
    @i_vaishnavi. Год назад +273

    Its mid of 2023 , still Alakh Sir's explanation is best !!

  • @deependrakumar564
    @deependrakumar564 7 лет назад +594

    sayad Maine RUclips me pehla assa channel dekha ha Jo use subscribe karne ko nahi bolta salute sir you are explaining very good keep it up thanku you

    • @usermis12
      @usermis12 7 лет назад +12

      Deependra Kushwaha and tht is the reason why I subscribed it nd liked it's videos😂😂😂

    • @saloniroy6982
      @saloniroy6982 6 лет назад +2

      +Misba Rifat me to

    • @saloniroy6982
      @saloniroy6982 6 лет назад +2

      +Misba Rifat I also did that's why.

    • @rajeshpandey9679
      @rajeshpandey9679 5 лет назад +11

      Inko bolne ki jaroorat nahi kyunki inka kaam bolta hai

    • @Palak-tr2ws
      @Palak-tr2ws 4 года назад

      There is one more channel like that. Visit Rajesh Sharma Biology. He is my favourite teacher☺️

  • @savitatalwar5141
    @savitatalwar5141 4 года назад +490

    My teacher actually confused me about refractive index and i thought i would never be able to understand it..but i randomly scroll down and got ur video and now my concept is just as clear as a crystal..
    Thank you alakh sir♥️🌈

  • @satyapalchaubey9012
    @satyapalchaubey9012 4 года назад +110

    He is really one of best teacher. Of physics... Without wasting time he is starting the topic..
    👏👏👏👏👏👏👏

  • @ulalalauleoulalauleo8750
    @ulalalauleoulalauleo8750 2 года назад +155

    Loved it!!
    kabse doubt tha iss topic me, even after 5 years this a masterpiece

  • @ishagupta332
    @ishagupta332 4 месяца назад +7

    7 years later...still the best video on youtube....GOAT for a reason😁😁😁

  • @unkn0wn-3626
    @unkn0wn-3626 11 месяцев назад +27

    After 6 year, still this video is helping many students. ❤️
    Thankyou sir 💟🙂

  • @EXW-ASHISH
    @EXW-ASHISH 8 месяцев назад +36

    History can't give us 2 things
    1.Dinasours
    2 . Alakh sir white board era😢
    By the way its 2024 añd still Alakh sir is best 👍

  • @studentslife4508
    @studentslife4508 3 года назад +9

    Sir is very interesting teacher .ones watching him vedio concepts clear

  • @srishti4693
    @srishti4693 2 года назад +28

    Best physics teacher ever. Literally watching this video a few hours before my exam

  • @SMASHTIME.11
    @SMASHTIME.11 Месяц назад +3

    Watching 7 years later of upload of video 😊
    Sir u r the best ❤❤

  • @jkj55
    @jkj55 3 года назад +41

    Sir u really know how to teach and make a concept clear easily 💜💜

  • @animeshmittal4960
    @animeshmittal4960 2 года назад +5

    Your teaching is magic sir, crystal clear mind after watching ur video, hats off to the way of teaching of urs!!!!!!!

  • @os9411
    @os9411 8 месяцев назад +863

    2025 walo keya haal hai😁😁
    Tnq... for 850 likes

  • @jaishankar7834
    @jaishankar7834 11 месяцев назад +211

    anyone is here for2024

  • @fascinatingphysics5501
    @fascinatingphysics5501 3 года назад +51

    I'm from Pakistan and working as Subject Specialist Physics in Elementary and Secondary education department of Government.
    I'm impressed by such amazing teacher.

  • @ankan2703
    @ankan2703 5 лет назад +11

    Liked your Explanation....🥰🥰🥰

  • @aftabalambhingashravasti6315
    @aftabalambhingashravasti6315 5 лет назад +118

    Aap log khoob like kre physics wallah ko unka confidence low na hone de

    • @milli509
      @milli509 4 года назад +13

      jo sbka confidence bdhate h....unka confidence level kaise low ho skta h...

  • @muskanverma7817
    @muskanverma7817 5 лет назад +15

    Best person who explained RI with numericals

  • @ashwin8850
    @ashwin8850 7 лет назад +140

    You are superb sir,i wish if you were my teacher.

  • @Dua-d3c
    @Dua-d3c 5 дней назад +1

    Sir your way of teaching is really amazing. I was very upset because of this topic but ur way has really inspired me 😍

  • @swetabadal5272
    @swetabadal5272 7 лет назад +7

    Wow sir great explanation....😇😇
    Thank you..😉

  • @avitatiwari722
    @avitatiwari722 2 года назад +1

    After Thor Alakh sir number is only there.👌👌👌👌👌💪👍👍
    God of Concepts

  • @banarasi_girl-K8v
    @banarasi_girl-K8v 4 месяца назад +4

    This video was uploaded 7 years ago.. we are still watching it in 2024 .... With udaan 2025 batch... ALAKH SIR OP... ✨🌈

  • @kickboi1204
    @kickboi1204 3 года назад +11

    Sir I have no words to say how your explanation is ?😌 outstanding sir it's too much better than some others

  • @Startwing77
    @Startwing77 4 года назад +21

    Bahut achhe teacher he aap , I love u sir as your students. U got a blessing from all children of world , 1 millon times of your subscriptions , u ra god to us 😭👍😊

  • @_Song_hub_.
    @_Song_hub_. Год назад +4

    Shortest video of reflective index and great explanation

  • @rupmilanbelthousefulemarke2870
    @rupmilanbelthousefulemarke2870 6 лет назад +11

    Because of you i am able to grasp this concept better

  • @anamikatiwari3809
    @anamikatiwari3809 3 года назад

    Itne kum time itna accha Kon samjhata hai ekdam simple saral bhasha Mai without confusing👏👏👏👏👏👏👏👏👏👏👂👏👏👏👏👂

  • @sciencetutorforfreescience4418
    @sciencetutorforfreescience4418 4 года назад +8

    well explained sir, i am not fluent in Hindi,still i can follow you. thanx. deleep ( Kingdom of Saudi Arabia)

  • @ramdayma1519
    @ramdayma1519 Год назад +1

    Wow amazing, sir is not wasting the time to replying our all comments

  • @hardikdwivedi2401
    @hardikdwivedi2401 5 лет назад +81

    Sir your home is front of my home love you

    • @as-qq5nx
      @as-qq5nx 5 лет назад +1

      😮😮

    • @raghavbharadwaj2656
      @raghavbharadwaj2656 4 года назад +3

      Where is your house hardik can u say me plz

    • @amol2086
      @amol2086 4 года назад +1

      Which city??

    • @arvindsada2841
      @arvindsada2841 4 года назад

      damn lucky bro... 😍

    • @bisd-bs2ls
      @bisd-bs2ls 4 года назад +1

      sir lives in allahabad near hardwaganj meena bazar

  • @devenderjoon6620
    @devenderjoon6620 4 года назад +2

    Sir ji tusi great ho.apaki video dekne ke bad meri is topic me iak bhi doubt nahi batcha.

  • @vanshika369
    @vanshika369 Месяц назад +3

    Imagine posting a video 7 years ago with cheap equipments but you teach so good that students watch it even a decade later💀💪
    (Aura +10000)

  • @ShashiKumar-su3eu
    @ShashiKumar-su3eu 7 дней назад +1

    Thank you so much sir, for your awesome explanation 🎉🎉🎉😊😊❤❤

  • @dharnasahu2506
    @dharnasahu2506 4 года назад +8

    He's a great teacher 🙏🙏🙏

  • @BrijeshTiwari-yw6xl
    @BrijeshTiwari-yw6xl 2 года назад +2

    The best explanation 👏👏💥💥😌😌

  • @gaurishr8962
    @gaurishr8962 5 лет назад +24

    Really giving you blessing from bottom of my heart sir 💕😇

  • @sonelalshende4686
    @sonelalshende4686 4 месяца назад +2

    Sir me hindi medium se hu fir bhi mujhe aapke lecture bahot achhe se smjh aa jate h 😅 thank you so much sir you are the best❤

  • @robinbatth8440
    @robinbatth8440 6 лет назад +10

    👉PHYSICS WALLAH 👈
    Is best of best👌👌👌👌

  • @poonamagrawal2901
    @poonamagrawal2901 Год назад +2

    Thank you sir ❤for this amazing video..

  • @n.agamerx3095
    @n.agamerx3095 11 месяцев назад +3

    Thanks u so much sir u have cleared my all dilemma's

  • @Laxmipandey400
    @Laxmipandey400 8 месяцев назад +2

    Sir can't explain how legend you are , each and every topic is crystal clear , thanks a lot sir , hats off to you 💗✨

  • @fastestgaming1300
    @fastestgaming1300 2 года назад +3

    He is good teacher he explain main points not extra point

  • @sudhashahi4469
    @sudhashahi4469 2 года назад +1

    My teacher actually good teaching 👍👍

  • @champion_explorer3676
    @champion_explorer3676 3 года назад +16

    i was really troubled with this but now am rocking on it..thanks a lot sir!!

  • @Quantum_Tech99
    @Quantum_Tech99 Год назад +2

    Thanku sir. Aapne itna acha smjhake hmara doubt khtm kr diya

  • @rijulgirotra9200
    @rijulgirotra9200 Год назад +5

    Sir, aap na hote toh kya hota mera, you are such a saviour

  • @subhalaxmibiswal8176
    @subhalaxmibiswal8176 4 года назад +2

    You are the best physics lecture sir.your vdos help me vry much for reading physics.Thank you sir for these types of vdos.thank you so much sir🙏🙏🙏🙏🙏🙏🙏🙏

  • @anaverse0_0
    @anaverse0_0 Год назад +13

    The fact that sir has grown so much in the past 4 years just blows my mind . Even when there are many teachers available i still look for alakh sir's old videos or just study from pw . Huge respect

  • @amitjaiswal5021
    @amitjaiswal5021 29 дней назад +2

    Worlds best physics teacher 😀💪

  • @Just..smile..00
    @Just..smile..00 Год назад +1

    Zindagi vich pehle vaar physics vich kuch samj aaya shi😊

  • @gauravtyagi4234
    @gauravtyagi4234 4 года назад +1

    I think he is the best teacher... Sir I seen your video first time... I according to me you are the great teacher... ❤️❤️❤️

  • @unknown17328
    @unknown17328 3 года назад +12

    He didn't even ask us to subscribe in the end of the video because he knew that the way he teaches will impress the students and they will subscribe by their own you are the bestest teacher I have ever came across ❤️❤️❤️❤️❤️

    • @daksh.x1
      @daksh.x1 Год назад

      Neet ka kya hua?neet aspirant..

  • @tahmidshoaib38
    @tahmidshoaib38 Год назад +1

    Dear sir. I have been watching your videos from Bangladesh.I wish you longevity and healthy life,You helped me like none else.Thank yous so very much again.Keep me in prayers❤️❤️❤️

  • @BeingAnzarKhann
    @BeingAnzarKhann Год назад +3

    Thank you ❤😮

  • @kawitabharti2751
    @kawitabharti2751 2 года назад +1

    Pehli bar mujhe refractive index smjhe aya h
    ..tnx you sir

  • @airineD
    @airineD 4 года назад +9

    Everything is simple , no unnecessary discussion , and that's why u r a great teacher sir

  • @bharatPatel-ex5or
    @bharatPatel-ex5or 5 лет назад +2

    Thank you very sir you very good teacher 😙😙😙🤗🤗

  • @mitakshrasonkar2784
    @mitakshrasonkar2784 6 лет назад +36

    Aap ne sabhe topic sir etne thode der ki video me cover kar deya
    I really like it sir
    Thankyou so much

  • @SiddharthGodi
    @SiddharthGodi 9 месяцев назад +1

    Best explanation sir i started loving ur videos❤ . Sir pls make more videos on class 10th physics

  • @vasugupta6143
    @vasugupta6143 4 года назад +27

    Sir when I saw your videos my curiosity to know about the other topic is increased
    Thanku soo much sir

  • @Poonamswami161
    @Poonamswami161 3 года назад +1

    U r the best teacher sir forever 😘😘😘😘😘😘😘 may u live long😘😘😘😘😘😘😘😘😘

  • @niharrika_03
    @niharrika_03 3 года назад +7

    ❤️❤️ keep growing sir , I was very confused in this topic since very long before watching it!!

  • @sumikshamaurya1891
    @sumikshamaurya1891 4 года назад +2

    You are the best teacher of physics 🤗

  • @NiranjanKumar-lb1ei
    @NiranjanKumar-lb1ei 3 года назад +10

    Your contribution to our study is just awesome

  • @Shubham-kumar-2009
    @Shubham-kumar-2009 6 месяцев назад +1

    Even after the 7years this is a masterpiece 🎉🎉

  • @ashmittricks5387
    @ashmittricks5387 6 лет назад +5

    Time saving ...appropriate ..very helpful...really appreciable ..thanx a lot

  • @cooltoday6469
    @cooltoday6469 4 года назад +1

    Physicswala is the best ,sir I'm your big fan

  • @Fatimachan_cookbook
    @Fatimachan_cookbook Год назад +3

    Thanks alotttttt sir!!!!!!
    Loads of respect from Pakistan

  • @Harshil-g1t
    @Harshil-g1t 11 месяцев назад +1

    thankyou sir ... i have clear all my doubts

  • @AkashYadav-cg5bq
    @AkashYadav-cg5bq 2 года назад +6

    Sir, only you who can understands your students feelings

  • @aniketsingh6273
    @aniketsingh6273 3 года назад +1

    Tnk u sir .. Maine itna vdo dekha refractive index ka kuch smjh me na aaya ...aapne itna bdhiya tarike se btaya ki ekdam mind me chap gya...

  • @Surya-6ux
    @Surya-6ux 6 месяцев назад +61

    2025 board wale attendence lga do😊

  • @Shahid-Ali123
    @Shahid-Ali123 2 года назад

    This man is amazing 😍😍😍
    Before watching this video I found it very difficult 🥳🥳🤩🤩🤩

  • @vivekvj4734
    @vivekvj4734 6 лет назад +7

    Sir aap really great ho
    Superman , spiderman etc. Ki trh aap mere HELPMAN ho sir
    I really appreciate you. Thx sir

  • @binitapaudel4339
    @binitapaudel4339 3 года назад +1

    wow amazing such a amazing teacher.may lord bless you🥀😌❤❤

  • @lalasharma383
    @lalasharma383 6 лет назад +11

    Sir , You are doing a great job for students of small towns and cities.
    Best teacher..

  • @tongra1vilokala593
    @tongra1vilokala593 3 года назад +1

    Best teacher without wasting time

  • @J9A5G5E5E9T
    @J9A5G5E5E9T 3 года назад +6

    Sir, I must appreciate your teaching style.. Now, I must say that all concept are clear and credit gone only to you.. Really thanks...👏👏

  • @Gaurav-dn5jk
    @Gaurav-dn5jk 11 дней назад +1

    alakh sir love you😍😍😍😍

  • @geevarghesejohnabhilash9427
    @geevarghesejohnabhilash9427 4 года назад +8

    Sir, you explain so well that the concept becomes very clear. Thank you so much sir.

  • @kiranskitchen.5623
    @kiranskitchen.5623 12 дней назад

    Assuming sar..best way of learning with you... Thanks 👍🏻 sar....

  • @sarbjotsingh7273
    @sarbjotsingh7273 6 лет назад +11

    sir wonderful teaching. teaches from the depth of the heart

  • @ratansingh1532
    @ratansingh1532 2 года назад +1

    He is the biggest teacher .... he is the biggest explainer ......he is the biggest national master blaster..

  • @theabhiram1639
    @theabhiram1639 4 года назад +18

    Watching this in 2020,u r a legend

  • @abhay1111
    @abhay1111 2 года назад +2

    Seeing the videos of physics wallah is directly proportional to increasing interest in science

  • @sanskriti3183
    @sanskriti3183 2 года назад +7

    Watching it in 2022! PW is evergreen!
    Understood this concept too good 😊
    Thanku so much sir 💖

  • @AK-vg1pz
    @AK-vg1pz 2 года назад +1

    Thank you sir after watching it after several yrs now also it's excellent 👍🙂!!!

  • @umairashraf3576
    @umairashraf3576 3 года назад +3

    Ur the best teacher ever found on RUclips.. u never waste tym asking for subscribers...thank you sir for all the motivation and guidance ♥️🌟

  • @ScholarsShilpa
    @ScholarsShilpa 5 лет назад +1

    thanks for adding short topicwise videos.

  • @nitishbhardwaj365
    @nitishbhardwaj365 5 лет назад +8

    sir i go for tutions but still i watch your videos because u make me understand the concept very well
    thnx sir

  • @omsaienglish3046
    @omsaienglish3046 Год назад +2

    Sr is a normal king he is a king maker

  • @aliyakhan1957
    @aliyakhan1957 7 лет назад +7

    Very nice explanation
    Really sir very nice explanation I was not able to understand the refractive index but after seeing this video I understood very well

    • @zebalizebali1376
      @zebalizebali1376 2 года назад

      Akhir me mujhe 4 saal purana comment mil hi gaya🥳

  • @anry2138
    @anry2138 3 года назад

    The one of the best teacher of phy on RUclips is phywala sir

  • @debahutisahoo-3392
    @debahutisahoo-3392 6 лет назад +33

    Sir thanks for teaching me I go 76 out of 80 in my exam for your valuable teaching😇😇😇

  • @dhirajverma9391
    @dhirajverma9391 3 года назад +1

    Sir you explain very nicely thanku so much sir you are helping a lot to students , we need teacher like you😭😭

  • @Study_28
    @Study_28 Год назад +4

    I still watch alakh sir's old videos😅❤....