Question

A ray of light enters flint glass from air. The reflector index of flint glass with respect to the air is 1.65, by what percent does the speed of light reduce on entering flint glass​

Answer 1

Answer:

39.39%

Explanation:

let c= refractive index with respect to air.

( speed of light in air/speed of light in medium)=c

now basic mathematical manipulation gives us ans as

(1-1/c)×100%