Question

2. A ray of light is reflected by an angle of 20° from a smooth polished surface.

i) What is the angle of incidence?
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Answer 1

Answer:

20°

Explanation:

the angle of incidence and the angle of reflected rays are always equal

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Answer 2

Answer:

angle of i = 20°

Explanation:

According to laws of rool of image formation by mirror

angle of i = angle of reflection (always)