A child watching Dussehra celebration from a distance.The effigy of Ravana burst into flames and hears the explosion associated with it 2 sec after that .How far was he from the effigy if the speed of sound is 335 m/s.


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Since speed of light is faster than speed of sound.
Speed of sound = 335 m/s
and since its heard 2 seconds later, the time taken to travel is 2 seconds.
So, distance = 335 × 2 = 670 m  

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When ravanawas seen to burst could be taken as real time when it occured
So diffrence in when event really occured and when it was heard is 2 seconds
therefore time taken =2 sec
Speed of sound=335 m/s
formula for distance = speed x time
335 x 2
670 m
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