Solved example: Curved surface refraction | Class 12 (India) | Physics | Khan Academy

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  • Опубліковано 29 жов 2024

КОМЕНТАРІ • 33

  • @geetugupta7244
    @geetugupta7244 2 роки тому +4

    At 0:01 , the way that glass sphere beautifully popped out...I knew the video was going to be awesome...!

  • @flute_e_casone
    @flute_e_casone 5 років тому +11

    Thanks sir, this video really help a lot , doubts cleared

  • @tabrezahmed1000
    @tabrezahmed1000 5 років тому +3

    Sir in the derivation we have already considerd that u is negative right?so why do we use -ve again on object distance in this problem?(in the first case)

  • @robinphilip2294
    @robinphilip2294 Місяць тому

    Should'nt case two have the ray of light refracting away from the normal?

  • @anjaligupta6180
    @anjaligupta6180 5 років тому +4

    Thank you sooo sooo much.. u cleared a huge doubt. Thanks a tonn

  • @prayanshsharma1832
    @prayanshsharma1832 5 місяців тому

    Thank you

  • @sakshigoyal8438
    @sakshigoyal8438 4 роки тому +2

    Sir you have already put u=- ve in derivation then why while solving questions,we write - ve sign with object distance? We should have simply put the value as we have considered the - ve sign already in derivation and derived the formula

    • @isratjahanemu7556
      @isratjahanemu7556 4 роки тому

      His sign conventions are wrong. Its not as simple as he stated right +ve, left -ve!

    • @givemeyoursistersinstagram655
      @givemeyoursistersinstagram655 2 роки тому +2

      LOL you clowns. He is absolutely correct. And Sakshi, check example 9.6 in NCERT. Even after derivation, you have to take anything ( distances) with appropriate signs,coz the formula derived is a general one.

  • @n0n3st0p
    @n0n3st0p 5 років тому +1

    how would you calculate the focal length of the interfaces?

  • @homeishaant2140
    @homeishaant2140 2 місяці тому +1

    wont 1.5 become negative (case2)

    • @robinphilip2294
      @robinphilip2294 Місяць тому

      no refractive index does not have any sign convention...

  • @minkeshratan2567
    @minkeshratan2567 4 роки тому

    Neet 2020 lockdown aspirant
    U are a saviour

  • @parthivmehta1300
    @parthivmehta1300 4 роки тому

    Sir we used n2 as 1.5 which is for glass but image is formed in air medium🧐

    • @KhanAcademyIndiaEnglish
      @KhanAcademyIndiaEnglish  4 роки тому +9

      Good question. I too used to think that n2 is R.I of the medium where the image is formed. But in reality, n2 is the R.I of the medium that contains the refracted ray. As you can see, it need not necessarily have the image formed in it.
      Let me know if you have more doubts

  • @avraophysics7820
    @avraophysics7820 5 років тому +1

    Superb sir very good explanation

  • @hachemouanes8751
    @hachemouanes8751 4 роки тому +1

    you saved my life!!

  • @ranjugogoi2918
    @ranjugogoi2918 5 років тому

    nice explanation

  • @sumalatha2790
    @sumalatha2790 3 роки тому

    Sir n=1.5 is in negative side

    • @oreowithurea5018
      @oreowithurea5018 2 роки тому

      true but that's refractive index of the surface, it's a ratio of two numbers and it has no direction or units so has nothing to do with sign convention

  • @sukulyadav2872
    @sukulyadav2872 Рік тому +1

    🙏🙏🙏🙏🙏🙏🙏🙏🏼🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏👍👍👍🏼👍🏼👍👍👍👍👍👍👍🏼
    Best question which cleared my all doubts

  • @tinydoge570
    @tinydoge570 4 роки тому

    this video is good for college students!!!

  • @AnjaliYadav-nz1gm
    @AnjaliYadav-nz1gm 5 років тому +1

    Very nice sir

  • @khamisfarid3804
    @khamisfarid3804 3 роки тому

    Who knows what device is used to make this kind of video?

  • @rostislavkarelin8644
    @rostislavkarelin8644 4 роки тому +1

    cool vid !

  • @vanshajshukla6205
    @vanshajshukla6205 5 років тому +1

    Thank you sir

  • @abdullahumar6437
    @abdullahumar6437 4 роки тому

    good job