Question

to study the low of reflection of light by plane mirror?
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Answer 1

Explanation:

First law :- When a light ray strikes a plane mirror, the light ray reflects off the mirror. Reflection involves a change in direction of the light ray. The angle of incidence is the angle between this normal line and the incident ray; the angle of reflection is the angle between this normal line and the reflected ray.

This is called the law of reflection. ... An incident ray of light hits a plane mirror at an angle and is reflected back off it. The angle of reflection is equal to the angle of incidence. Both angles are measured from the normal. The normal is an imaginary line at right angles to the plane mirror.

The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.

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Answer 2

diagram of reflection of light

...hope u understand