JAMB Physics 1987 Question 32

Question 32

Light and Reflection

Which of the following statements supports the assumption that light travels in straight lines?

  1. A.Light can be diffracted
  2. B.A source of light produces distinct shadows of opaque objects
  3. C.A source of light produces interference patterns on a suitably placed screen
  4. D.Light can be reflected.
Show the answer and explanation

Answer: B (A source of light produces distinct shadows of opaque objects)

Explanation

Sharp shadows form because light cannot bend round the edges of an opaque object; it travels in straight lines.