Question

what do you understand by minimum deviation in a prism ? what are values of angle of incidence and angle of emergence in a minimum deviation prism​

Answer 1

Explanation:

In Minimum Deviation, the refracted ray in the prism is parallel to its base. In other words, the light ray is symmetrical about the axis of symmetry of the prism. Also, the angles of refractions are equal i.e. . And, the angle of incidence and angle of emergence equal each other

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Answer 2

Answer:

It is clear that an angle of deviation has the minimum value 'δm' for only one value of the angle of incidence. The minimum value of the angle of deviation when a ray of light passes through a prism is called the angle of minimum deviation