q5

A boy stands in front of a tall wall and claps. The boy continues to clap every time an echo is heard. Another boy finds that the time taken between the firs and 51st clap is 18s. v=?

330m/s
340 m/s
333m/s
none

2 Answers

31
Tamal ·

A boy stands 60m in front of a tall wall and claps.
60 m went missing

337
Sayan Sinha ·

Answer in all probability is 340 m/s.
I used a very crude method to arrive at the solution. I will think of another solution...

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