An echo is heard after 2 seconds from a cliff. If speed of sound is 340 m/s, distance of cliff is

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Sound travels to cliff and back. Total distance = speed × time = 340 × 2 = 680 m. So distance to cliff = 680/2 = 340 m. Use formula d = (v × t)/2. Time for round trip. Minimum distance for echo 17 m (approx) for 0.1 s persistence.

An echo is heard after 2 seconds from a cliff. If speed of sound is 340 m/s, distance of cliff is MCQ with Answer and Explanation

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