Question

In an experiment to trace the path of the rays of light through a glass prism, what happens to the ray of light striking on a face of prism.
In an experiment to trace the path of the rays light through a glass prism, what happens to the ray of light emerging from a peism.?
Why does a prism spilts a beam of white light passing through it into seven colours?

Answer 1

Answer:

The incident ray bends towards the normal when it enters the prism and while leaving the prism it bends away from the normal. With the increase in the angle of incidence, the angle of deviation decreases. After attaining the minimum value, it increases with an increase in the angle of incidence.

Answer 2

In an experiment to trace the path of the rays of light through a glass prism, what happens to the ray of light striking on a face of prism?

When a ray of light from air strikes on a face of a triangular glass prism, it gets refracted and bends towards the normal to the plane.

In an experiment to trace the path of the rays of light through a glass prism, what happens to the ray of light emerging from a prism?

When a ray of light emerges from a prism, it gets refracted and bends away from the normal.

Why does a prism splits a beam of white light passing through it into seven colours?

Splitting of white light into its component colours on passing through the prism is due to the difference in velocities of colours.