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A ray of light is incident on mirror m\(_1\) and after reflection is incident on mirror...

Physics
WAEC 2025

A ray of light is incident on mirror m\(_1\) and after reflection is incident on mirror m\(_2\) as shown in the diagram above. Calculate the angle of reflection of the ray at mirror m\(_2\).

  • A. 60\(^0\)
  • B. 90\(^0\)
  • C. 30\(^0\)
  • D. 120\(^0\)
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Correct Answer: Option C
Explanation

i at m\(_1\) = 60° → r = 60° at m\(_1\) (law of reflection i ° = r °) i at m\(_2\) = 30°

i = r,

∴ r = 30°

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