Question

Refractive index of two material medium X and Y are 1.3 and 1.5respectively. In which of the two, the light would travel slower?

Answer 1

Given :
Refractive index of first medium X=1.3
Refractive index of Second medium Y=1.5

We can observe that Refractive index of Y > Refractive index of X.

Hence light travels at a slower rate in medium Y than in medium X.

Reason :
Speed α 1/ n

Answer 2

Given :

Refractive index of first medium X=1.3

Refractive index of Second medium Y=1.5

We can observe that Refractive index of Y > Refractive index of X.

Hence light travels at a slower rate in medium Y than in medium X.

Reason :

Speed α 1/ n