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JAMB Physics 1979 Question 18

Question 18

Light and Reflection

A man standing between two parallel mirrors in a barber's shop will see the following number of his own image

  1. A.Eight
  2. B.Two
  3. C.Four
  4. D.One
  5. E.Infinite
Show the answer and explanation

Answer: E (Infinite)

Explanation

For parallel mirrors the angle between them is 0°, so n = 360°/θ − 1 is infinite: each image is reflected again and again.