Question

A girl is sitting in the middle of the park of dimension 12m x 12m. On the left side of it there is a
building adjoining the park and on the right side, there is a road adjoining the park. A sound is
produced on the road by a cracker. Is it possible for the girl to hear the echo of the sound? Support
your answer with a numerical calculation. (3)marks .I will mark as brainliest​

Answer 1

Explanation:

If the time gap of the original sound and reflected sound received by the listener is around 0.1 s only then the echo can be heard

The minimum distance traveled by the reflected sound wave for the distinctly listening to the echo

=velocity of sound X time interval

= 344 x 0.1=34.5 m

But in this case the distance travelled by the sound reflected from the building and then reaching to the girl will be (6+6) =12m which is much smaller than the required distance. Therefore no echo can be heard

Answer 2

Answer:

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