A boy stands 80m away from a high wall and claps. He continues to clap as soon as he hears an echo. Another boy records that the time taken between the first clap and eleventh clap is 3s. Calculate the speed of sound.

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Solution

Distance covered in ten claps (1st to 10 claps), x= 2(1080) m
=>x = 1600m
Time taken t= 3s
Speed of sound = x/t
= 1600/3
=533.33 m/s

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A boy stands 80m away from a high wall and claps. He continues to clap as soon as he hears an echo. Another boy records that the time taken between the first clap and eleventh clap is 3s. Calculate the speed of sound.

Distance covered in ten claps (1st to 10 claps), x= 2*(10*80) m=>x = 1600mTime taken t= 3sSpeed of sound = x/t= 1600/3=533.33 m/s

Distance covered in ten claps (1st to 10 claps), x= 2(1080) m
=>x = 1600m
Time taken t= 3s
Speed of sound = x/t
= 1600/3
=533.33 m/s