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JAMB Physics 1992 Question 21

Question 21

Waves

Which of the following characteristics of a wave is used in the measurement of the depth of the sea?

  1. A.Diffraction
  2. B.Interference
  3. C.Refraction
  4. D.Reflection
Show the answer and explanation

Answer: D (Reflection)

Explanation

Echo sounding sends a sound pulse down and times its echo, which is the pulse reflected from the sea bed.