Question

definition of angle of deviation

Answer 1

The angle of deviation through a triangular prism is defined as the anglebetween the incident ray and the emerging ray (angle δ). It can be shown that when the angle of incidence i is equal to the angle of refraction r' for the emerging ray, the angle of deviation is at a minimum

Answer 2

Hi friend here is your answer

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Angle of deviation: The angle between the incident ray and the emergent ray is called angle of deviation.

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