Question

Why does the emergent ray in a prism bend at an angle to the direction of the

incident ray?​

Answer 1

Answer:

When a ray of light enters from lighter medium to denser medium it bends towards the normal. Here the air is lighter medium and prism is denser medium. As the ray moves out of the prism it again undergoes refraction on moving from denser medium to lighter medium. This time, the refracted ray bends away from the normal.

Explanation:

Answer 2

Answer:

Explanation:

When an incident ray of light enters a prism it gets refracted towards the normal. This refracted ray then strikes the other face of the prism and further deviates away from the normal and leaves the glass prism to enter the air i.e. from one medium to the other. This ray that leaves the prism is called emergent ray. Thus the emergent ray bends away from the normal.