PhysicsSound wavesJAMB
A girl sees a lightning flash and hears the thunder 3 s later. If sound travels at 340 m/s, how far away is the storm?
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Answer: B. 1020 m
Light arrives almost instantly, so distance = 340 × 3 = 1020 m (no doubling, since the sound is not an echo).
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.