Question

A mirror is rotated by an angle tita , keeping the incident ray fixed. The reflected ray rotates through an angle​

Answer 1

Answer:

If the mirror is rotated through an angle the normal is rotated by an angle and thus the angle of incidence increases to +. Therefore, the angle of reflection must also increase by tow The difference between the final angle of reflection and the initial angle of reflection and is 2θ.

Answer 2

Answer:

The reflected ray rotates through an angle 2θ. A ray of light is reflected by an angle (angle of incidence or angle of reflection; since both are equal) about the normal after reflection. Now, when the mirror itself is rotated by theta, the normal also rotates by theta

Explanation:

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