How does a ray of light travel through a triangular prism?

For a correct, clear and understandable answer to this question, we must understand what a triangular prism is.

A triangular prism is a special type of prism through which light passes in a special way, at a certain angle.

Now let’s understand how the light passes.

Light rays, when passing through this prism, begin to refract from both sides.

An angle is formed between them.

This angle in physics is called the angle of the prism.

Thus, the light passes through the prism, at a special angle and when its beam changes.