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JAMB Physics 2012 Question 30

Question 30

Light and Reflection

Where can a man place his face to get an enlarged image when using a concave mirror to shave?

  1. A.Between the centre of curvature and the principal focus.
  2. B.At the principal focus
  3. C.Between the principal focus and the pole
  4. D.At the centre of curvature.
Show the answer and explanation

Answer: C (Between the principal focus and the pole)

Explanation

An object between the focus and the pole of a concave mirror gives an upright, magnified, virtual image, which is what a shaving mirror needs.