Question

The refractive index of a medium x with respect to medium y is 23 and the refractive index of medium y with respect to medium z is 43. Find the refractive index of medium z with respect to medium x.

Answer 1

Refractive index 2nd medium with respect to 1st medium means how many times light travel in first medium then in second medium.

The refractive index of second medium with respect to first medium is aUb i.e. yUx is 23

and,

zUy is 43.

So , the refractive index of z with respect to x i.e., xUz is 23/43.