Question

What is the angle of deviation for a Ray which incident with an angle 45° on the plane mirror

Answer 1

Explanation:

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Answer 2

The angle of deviation for a Ray that incident with an angle of 45° on the plane mirror is 90°

Given:

The angle of incidence = 45°

Find:

The angle of deviation

Solution:

The angle between the direction of the incident ray and t  direction of the refracted ray is known as the angle of deviation.

Normally it is twice the angle made by the incident ray with the mirror.

The angle of deviation = (180 - 2θ)

Where θ is the angle of incidence = angle of refraction.

                                = (180 - (2*45))

                                = (180 - 90)

                                = 90°

Hence the angle of deviation is 90°

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