A beam of light is incident on a plane mirror at an angle of 35¨¬. If the mirror rotates through a small angle ¥è through what angle will the reflected ray rotate

Interesting question. Do you have any thoughts on this?

To determine the angle by which the reflected ray will rotate, we need to consider the relationship between the incident angle and the reflected angle.

The law of reflection states that the angle of incidence is equal to the angle of reflection. This means that if the incident angle is 35°, then the reflected angle will also be 35°.

Now, if the mirror rotates through a small angle δ, we can calculate the angle by which the reflected ray will rotate as follows:

1. Assume that the mirror rotates counterclockwise when viewed from the front. This means that the reflected ray will rotate clockwise.

2. The angle by which the reflected ray rotates is equal to twice the angle through which the mirror rotates. This is known as the "twice the angle the mirror turns" rule.

Therefore, the reflected ray will rotate by 2 * δ degrees.

In this case, if the mirror rotates through a small angle δ, the reflected ray will rotate by 2 * δ degrees.