Question

Speed of light in water and glass is 2.24×10^8m/s and 2×10^8m/s. What is the refractive index of water with respect to glass​

Answer 1

Refractive index of glass with respect to water =speed of light in glass / speed of light in water

=(2×10^8)/(2.24×10^8)

=25/28

For refractive index of water with respect to glass, it is 28/25

Hope it helped u☺️☺️☺️

Answer 2

BTW, You should post in science section. But however here's the answer.

refractive index = speed of light in vaccum/speed of light in medium

ATQ,

n = 3×10^8 / 2.25 × 10^8

n =1.33, ans.