Question

The velocity is higher in the medium whose refractive index is ______________

(a) Lower

(b) Higher

(c) 1

(d) Same as the first medium

Answer 1

Correct answer is (a) Lower

The best explanation: We know, that the speed of light in a medium = speed of light in vacuum/refractive index of the medium. Hence, as the refractive index is lower, the speed of the light in that medium is higher and vice versa.