A man stands 33, m from a high wall and claps | vedclass

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(A) The distance of the wall is $d = 33\, m$.The velocity of sound is $v = 330\, m s^{-1}$.The time taken for the sound to travel to the wall and back

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(A) The distance of the wall is $d = 33\, m$.The velocity of sound is $v = 330\, m s^{-1}$.The time taken for the sound to travel to the wall and back is given by the formula $t = \frac{2d}{v}$.Substituting the values,$t = \frac{2 	imes 33}{330} = \frac{66}{330} = 0.2\, s$.For an echo to be heard by the human ear,the time interval between the original sound and the reflected sound must be at least $0.1\, s$.Since the calculated time $0.2\, s$ is greater than $0.1\, s$,the echo will be heard.

$A$ man stands $33\, m$ from a high wall and claps his hands. Will he hear an echo? (Given,velocity of sound is $330\, m s^{-1}$)

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