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Answer 1

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FULLY EXPLAINED SOLUTION

=> Deviation produced by a plane mirror can be defined as the angle between the directions of the incident ray and the reflected ray (or, the emergent ray). We denote it generally by the symbol δ.

Whenever a ray of light is reflected by a plane mirror, the direction of propagation of the ray changes or in other words some deviation is produced in path of the ray. The amount of deviation depends on the angle of incidence of the ray and can be determined as follows:

Say a ray of light is incident on a plane reflecting surface, making an angle 'i' with the normal to the surface. After reflection, the resulting reflected ray makes an angle 'r' with the normal. Then, as per the laws of reflection, ‘r = i'.

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