A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air is 330 m $s^{- 1}$ , how long will the sound of factory siren take to reach the worker?

1 s

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2 s

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3 s

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4 s

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Solution

The correct option is D 4 s
Given,

Distance $= 1.32 k m = 1320 m$

Speed of sound in air $= 330 m / s$

We have,

$T i m e = \frac{D i s t a n c e}{S p e e d}$

$T i m e = \frac{1320}{330} = 4 s$

Thus it would take $4 s$ for the sound of the factory siren to reach the
worker.

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A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air is 330 ms−1, how long will the sound of factory siren take to reach the worker?

The correct option is D 4 sGiven,Distance =1.32km=1320mSpeed of sound in air =330m/sWe have,Time=DistanceSpeedTime=1320330=4sThus it would take 4s for the sound of the factory siren to reach the worker.

A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air is 330 m $s^{- 1}$ , how long will the sound of factory siren take to reach the worker?

The correct option is D 4 s
Given,

Distance $= 1.32 k m = 1320 m$

Speed of sound in air $= 330 m / s$

We have,

$T i m e = \frac{D i s t a n c e}{S p e e d}$

$T i m e = \frac{1320}{330} = 4 s$

Thus it would take $4 s$ for the sound of the factory siren to reach the
worker.