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JAMB Physics 1988 Question 28

Question 28

Sound

A slight loading of a tuning fork has the effect of

  1. A.decreasing its amplitude
  2. B.increasing its amplitude
  3. C.decreasing its frequency
  4. D.increasing its frequency
Show the answer and explanation

Answer: C (decreasing its frequency)

Explanation

Adding mass to the prongs makes them vibrate more slowly, so the frequency falls.