Question

The speed of light in water is 2.25 into 108m/sec in speed of light in vaccum is 3×10power8m/sec. Calculate the refractive index of water

Answer 1

Speed of light in water = 2.25 × 10^8 m/s

Speed of light in vacuum = 3 × 10^8 m/s

Refractive index of water = speed of light in vacuum / speed of light in water

n = 3 × 10^8 / 2.25 × 10^8

n = 3 / 2.25

n = 1.33

Hope you understand...