Question

1.what happens when a ray of light falls normally on the surface of a plane mirror?​

Answer 1

Answer:

It reflects back without deviating from its original path.

Explanation:

When a light ray falls on a plane mirror (incident ray) it strikes back into the same medium (reflected ray).The angle of incidence is equal to angle of reflection.

Answer 2

Answer:

here is your answer

Explanation:

If the ray of light falls on the mirror normally then it is reflected back on the same path. If it falls at some acute angle then it obeys two laws of reflection of light

i. The incident ray, normal and reflected ray are in the same plane

ii. Angle of incidence and reflection are equal