Question

physics 12 class 2021 questions​

Answer 1

If 'n' is the refractive index of a particular medium, then velocity of light in that medium is given by,

v = c/n, where 'c' is the speed of light in vacuum.

So, 'v' is inversely proportional to 'n'.

Or, 'v×n' is constant.

Thus, option (2) is correct.

Hope, this helps...