Question

The Refractive index of material is 1.4 If velocity of light in vacuum is 3×10^8. Find the velocity of light in material?

Answer 1

Answer:

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Explanation:

u1/u2=v2/v1

1/1.4=v2/3×10^8

v2=3×10^8/1.4

ans:3×10^9/14

Answer 2

Answer:

3×10^9/14

Explanation:

u1/u2=v2/v1

1/1.4=v2/3×10^8

v2=3×10^8/1.4

ans:3×10^9/14