Question

a medium whose refractive enlarge is known as optically ​

Answer 1

Explanation:

ANSWER

Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray towards the normal to the boundary between the two media. The amount of bending depends on the indices of refraction of the two media.