Question

Calculate the speed of light in water of refractive index 1.3 given speed of light in air?

Answer 1

Answer:

2.25×10^8 m/s

Explanation:

Refractive index = speed of light in vacuum/ speed of light in air.

denotes n= C/v

v= C/n

C=3×10^8 m/s

n=1.3

then v=3×10^8/1.3

speed of light in air=2.25×10^8 m/s.

hopes it helps you.