Question

a plane mirror,reflecting a ray of incident light,is rotated through an angle tita about an axis through the point of incidence​

Answer 1

Answer:

Consider a plane-mirror and a fixed incident ray of light reflecting from the surface at an angle . Before the mirror has rotated, the angle of incidence is is the angle of reflection. 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.

Hope it helps Please mark my answer as Brainliest and follow

Answer 2

Explanation:

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