Question

2.4 Define the following
(a) Echo
Ans.​

Answer 1

Explanation:

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Answer 2

Explanation:

Answer

Echo

The Sound Wave received After being Reflected From a High tower or mountain is called Echo

Here Some Extra Information

To hear echo , the minimum distance between the observed and reflector Should be 17m (16.6m)

Persistence of ear ( effect of sounds on ear ) is 1/10 sec

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