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Physics - Solved Example Problems for Reflection of Sound Waves | 11th Physics : Waves

Chapter: 11th Physics : Waves

Solved Example Problems for Reflection of Sound Waves

Physics : Waves - Solved Example Problems for Reflection of Sound Waves


EXAMPLE 11.10

Suppose a man stands at a distance from a cliff and claps his hands. He receives an echo from the cliff after 4 second. Calculate the distance between the man and the cliff. Assume the speed of sound to be 343 m s-1.

Solution

The time taken by the sound to come back as echo is 2t = 4  t = 2 s

The distance is d = vt =(343 m s-1)(2 s) = 686 m.

 

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