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Question

What happens when a ray of light falls normally (or perpendicularly) on the surface of the mirror?

A
It is reflected back along the normal.
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B
Travels away from normal.
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C
It passes through focus after reflection.
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D
It reflects towards the pole of the mirror
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Solution

The correct option is A It is reflected back along the normal.
If a ray of light is incident normally on a mirror, it means that it is travelling along the normal to the mirror. So, the angle of incidence of light is 0 degree. Then, by the laws of reflection, angle of reflection is also 0 degree. The light ray is reflected back along the normal.

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