A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, by what per cent does the speed of light reduce on entering the diamond?
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✯Question✯
- A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, by what per cent does the speed of light reduce on entering the diamond?
✦Answer✦
- We know, n = c ÷ v ⋆Refractive Index⋆
- c is speed of light in vacuum
- v is speed of light in diamond
- n is refractive index
- v = c ÷ n
- c ÷ 2.42 = 0.41c
✬The speed of light in diamond is therefore 41% of the speed in air or in diamond, the speed reduces by 59%
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Answer:
✯Question✯
A ray of light enters a diamond from air. If the refractive index of diamond is 2.42, by what per cent does the speed of light reduce on entering the diamond?
✦Answer✦
We know, n = c ÷ v ⋆Refractive Index⋆
c is speed of light in vacuum
v is speed of light in diamond
n is refractive index
v = c ÷ n
c ÷ 2.42 = 0.41c
✬The speed of light in diamond is therefore 41% of the speed in air or in diamond, the speed reduces by 59%
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