a ray of light enters from air water which has a refractive index 1.33.if the velocity of light in air is taken 3x10^8ms-1, find the velocity of flight in water.
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1
refractive index = speed of light in vaccum/ speed of light in medium
1.33= 3*10^8/x
x= 2.25 * 10^ 8
1.33= 3*10^8/x
x= 2.25 * 10^ 8
Answered by
4
Answer:
2.25 × 10⁸ m / sec
Explanation:
Given :
Refractive index of water = 1.33
Speed of light in air = 3 × 10⁸ m / sec.
We know :
Refractive index = Speed of light in air / Speed of light in water
Speed of light in water = Speed of light in air / Refractive index.
Putting value we get :
Speed of light in water = 3 × 10⁸ m / sec / 1.33 .
Speed of light in water = 2.25 × 10⁸ m / sec
Hence speed of light in water is 2.25 × 10⁸ m / sec
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