Question

when a light travelling in a homogeneous medium fall on another medium then​

Answer 1

When a ray of light travelling in one medium enters another medium obliquely, the light ray changes its direction at the interface. This phenomenon is called refraction of light.

Answer 2

Answer:

first medium

Explanation:

When a light travels from a rarer medium (less refractive index) to denser medium (higher refractive index), its speed decreases and vice-versa. Hence, speed of light in second medium is less than that in first medium.