Question

Light enters from air to kerosene of refractive index of 1.47.Calculate the speed of light in kerosene if speed of light in air is 3×10´8m/s.

Answer 1

Answer:

2.04 ×10´8 m/s

Explanation:

1.47 =  3×10´8 /vk

vk = 3×10´8/1.47 = 2.04 ×10´8 m/s

Answer 2

Answer:

the answer is 3*10^8 m/s

Explanation:

speed of light is equal to speed in kerosine