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A man standing 510m away from a wall sounds a whistle. The echo from the...

Physics
NECO 2000
A man standing 510m away from a wall sounds a whistle. The echo from the wall reaches him 3s later. Calculate the velocity of sound in air.
  • A. 170 ms-1
  • B. 340 ms-1
  • C. 680 ms-1
  • D. 765 ms-1
  • E. 1530 ms-1
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Correct Answer: Option B
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts