The time interval between a lightning flash and the first sound of thunder was found to be $5 s$ . If the speed of sound in air is $330 m s^{- 1}$ , find the distance of flash from the observer.

1650 m

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165 m

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330 m

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None of the above

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Solution

The correct option is A $1650 m$
The speed of the sound, distance traveled and the time taken relationship is given as follows.

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

From this equation the Distance traveled is derived as
$D i s t a n c e t r a v e l l e d = S p e e d o f s o u n d \times T i m e t a k e n$

That is, $D i s t a n c e t r a v e l l e d = 330 m / s \times 5 s e c o n d s$ , given that the speed of sound is 330 m/s.

= 1650 meters.

Hence, the distance of flash from the observer is 1650 meters.

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The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 ms−1, find the distance of flash from the observer.

The time interval between a lightning flash and the first sound of thunder was found to be $5 s$ . If the speed of sound in air is $330 m s^{- 1}$ , find the distance of flash from the observer.