Question

air.
away from a wal
Agaps and hears the echo after reflection from a diff which is 660 m away from
Welocity of sound is 330 m/s, calculate the time taken for hearing th​

Answer 1

Given that,

• Distance = 660 m (d)
• Velocity of sound = 330. m/s
• Time taken = ?

we know,

$velocity \: of \: sound \: = \frac{2d}{t}$

$330 = \frac{2 \times 660}{t} \\ t \: = \frac{2 \times 660}{330} \\ t = 4 \: sec$

Therefore, the time taken to hear the echo is 4 seconds.

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