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ICSE Class 7 Physics Question 1 of 42

Sound — Question 1

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Question 1

A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.

Answer

Distance (d) = 1020 m

time (t) = 3 s

Speed of sound = distancetime\dfrac{\text{distance}}{\text{time}} = 10203\dfrac{\text{1020}}{\text{3}} = 340 m s-1.

So, speed of sound = 340 m s-1.