What happens to a light ray if it is incident on a reflective surface along the normal? A. The incident ray retraces its original path. B. The incident ray is reflected perpendicular to the normal. C. The incident ray is reflected at an angle to the normal. D. The incident ray is not reflected.

Question

Physics

Gilbert Kidd

23 March, 20:58

What happens to a light ray if it is incident on a reflective surface along the normal? A. The incident ray retraces its original path. B. The incident ray is reflected perpendicular to the normal. C. The incident ray is reflected at an angle to the normal. D. The incident ray is not reflected.

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Answers (2)

Know the Answer?

Dashawn Flores · Answer 1

The answer is A.

Explanation:

It is a special case for a light ray to be incident on a reflective surface along the normal, the ray will be reflected right back to the normal. So the answer is A. The incident ray retraces its original path.

Ryder Leon · Answer 2

a light ray is incident on a reflective surface along the normal

so the angle of incident = angle bet. ray n the normal = 0

n angle of incident = angle of reflection

so angle of reflection = 0

ans is A. The incident ray retraces its original path.