Question

Before we go further and discuss spherical mirrors, please answer the following questions:
Very Short Answer Type Questions
1. What happens when a ray of light falls normally (or perpendicularly) on the surface of a plane mirror?
flicht is incide​

Answer 1

When a ray of light falls normally (or perpendicular) on the surface of a plane mirror, it means that angle of incidence is 0°. Thus, the light ray will be reflected back along the same path.

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Answer 2

Answer :•

1. It would reflect back perpendicularly.

2. Its angle of incidence and angle of reflection both are equal.

3. According to law of reflection, both will be zero degree.

4. As it would make zero degree with the normal ( it falls normally )