Question

Light enters from air to glass having refractive index 1.5. What is the
speed of light in the glass? The speed of light in vaccum is 3 x 109 ms!​

Answer 1

Answer:

8m/second

Explanation:

Refractive index of glass with respect to water = speed of light in air / speed of light in glass. 1.5 = 3×10^8 / speed of light in glass. speed of light in glass = 3 × 10^8 / 1.5. = 2 x 10^8 m/s

Answer 2

Answer:

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Explanation:

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c= speed of light

n= newton

v= velocity

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n=c/v

v=c/n (by inter-changing)

v=3x10^8/1.5

v=2x10^8m/s

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