JAMB and WAEC Physics questions: Sound waves

24 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Sound waves· JAMB

   A pipe open at both ends is 50 cm long. Find the frequency of its fundamental note if sound travels at 340 m/s (ignore end corrections).

   • A170 Hz
   • B340 Hz
   • C680 Hz
   • D85 Hz

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2. Question 22· Sound waves· WAEC

   A girl claps in front of a wall and hears the echo 1.2 s later. If sound travels at 340 m/s, how far is the wall?

   • A102 m
   • B408 m
   • C283 m
   • D204 m

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3. Question 23· Sound waves· JAMB

   A boy claps his hands in front of a wall and hears the echo 1.5 s later. If the speed of sound is 330 m/s, how far is he from the wall?

   • A495 m
   • B247.5 m
   • C220 m
   • D165 m

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4. Question 24· Sound waves· WAEC

   The pitch of a note depends on its

   • Aamplitude
   • Bfrequency
   • Cspeed
   • Dquality

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   Explanation and discussion