Question

A light ray incident on a plane mirror. If the angular deviation is equal to the angle of incidence,what is the angle of glancing

Answer 1

Answer:

The total angle between the straight-line path and the reflected ray is twice the angle of incidence. This is called the. The angle of deviation in plane mirror is equal to the twice of glancing angle .

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Answer 2

Answer:

The total angle between the straight-line path and the reflected ray is twice the angle of incidence. This is called the deviation of the light and measures the angle at which the light has strayed from its initial straight-line path.

The angle of deviation in plane mirror is equal to the twice of glancing angle .

Angle of deviation = 2α

Angle of deviaiton = 2 ×angle of glancing

Given angle of deviation = angle of incidence

Angle of incidence = 2 ×angle of glancing

Angle of glancing = 1/2angle of incidence

α=1/2(90 −α)

3theta=90degree

therefore theta=30 degree....

So, angle of glancing is 30 °.