Question

what is the relation between angle of incidence and angle of emergence ?

Answer 1

Answer:

In case of a glass slab, the incident ray is parallel to the emergent ray. It means that the angle of incidence is equal to the angle of emergence. When a ray of light is incident on the surface of a glass slab, it undergoes refraction.

Explanation:

The angle through which the emergent ray deviates from the direction of incident ray is called angle of deviation 'd'. As the angle of incidence is increased, angle of deviation 'd' decreases and reaches minimum value. If the angle of incidence is further increased, the angle of deviation is increased.

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Answer 2

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