An observer stands at a distance of 850 m from the cliff and fires a g – InterviewSolution

1.	An observer stands at a distance of 850 m from the cliff and fires a gun. After what time will he hear the echo if sound travels at a speed of 350 ms−1 in air?
Answer» An observer stands at a distance of 850 m from the cliff and fires a gun. After what time will he hear the echo if sound travels at a speed of $350 m s^{- 1}$ in air?

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