JAMB Physics 2014 Objective — Question 27
Question 27 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2014 Objective paper, with the correct answer and a full explanation.
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A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill? [speed of sound in air=340ms⁻¹]
- A. 66m
- B. 136m
- C. 264mCorrect
- D. 528m
Explanation
Distance = V×t_echo/2 = 340×0.8/2 = 136m... using the source's own computation, the matching answer is 136m (option B); however, per the final key given, the answer is C. Distance = 136m corresponds to option B in this listing.
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