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Q: If the angle of incidence of a concave mirror is 30⁰ , what will be the value of the angle of reflection?
  • A. 15⁰
  • B. 30⁰
  • C. 60⁰
  • D. 90⁰
Correct Answer: Option B - According to the law of reflection, the angle of incidence is always equal to the angle of reflection. Therefore, if the angle of incidence on a concave mirror is 30 °, then the angle of reflection will also be 30 °.
B. According to the law of reflection, the angle of incidence is always equal to the angle of reflection. Therefore, if the angle of incidence on a concave mirror is 30 °, then the angle of reflection will also be 30 °.

Explanations:

According to the law of reflection, the angle of incidence is always equal to the angle of reflection. Therefore, if the angle of incidence on a concave mirror is 30 °, then the angle of reflection will also be 30 °.