Assuming the speed of sound in air equal to $340 m s^{- 1}$ and in water equal to $1360 m s^{- 1}$ , find the time taken to travel a distance $1700 m$ by sound in water

0.8 s

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1 s

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1.5 s

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1.25 s

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Solution

The correct option is D $1.25 s$
$T i m e t a k e n = \frac{D i s t a n c e t r a v e l l e d}{S p e e d o f s o u n d}$

The time taken through the iron rail and air are calculated as follows.

$T i m e t a k e n = \frac{1700 m}{1360 m / s}$ , given that the speed of sound in water is 1360 m/s and the distance covered is 1700 meters.

$= 1.25 s e c o n d s .$

Hence, the time taken for the sound to travel in water is 1.25 seconds.

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Assuming the speed of sound in air equal to 340 ms−1 and in water equal to 1360 ms−1, find the time taken to travel a distance 1700 m by sound in water

Assuming the speed of sound in air equal to $340 m s^{- 1}$ and in water equal to $1360 m s^{- 1}$ , find the time taken to travel a distance $1700 m$ by sound in water