Question

A medium in which the velocity of light is more is called optically _____ medium.​

Answer 1

Answer:

A medium in which the velocity of light is more is called optically rarer medium

Answer 2

Answer:

A medium in which the velocity of light is more is called an optically rarer medium.​

Explanation:

The velocity of light is not the same in every medium. Light has its maximum velocity, approximately 3 × 10⁸ m/s, in a vacuum. The speed of the light will be higher in a medium with less density. ie; in a rarer medium. If the density of the medium increases then light will have to undergo more scattering. This will reduce the speed of light.

So, light can travel with maximum velocity in an optically rarer medium. Light has maximum velocity in a vacuum as it contains no matter to scatter the light.