Question

Light enters from air into water whose refractive index is 1.33. Calculate the speed of light in water. Given that the speed of light in air is 3×10^8ms-1

Answer 1

Answer:

2.25 × 10^8 m/s.

Explanation:

Refractive index = Speed of light in vaccum / Speed of light in water.

n= 3 × 10^8 m/s / (1.33) = 2.25 × 10^8 m/s