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In a certain gas, a source produces 40,0...

In a certain gas, a source produces 40,000 compression and 40,000 rarefaction pulses in 1 sec. When the second compression pulse is produced, the first is 1cm away from the source. Calculate the wave speed.

Text Solution

Verified by Experts

We know frequency is equal to number of compression or rarefaction pulses travelled per second, hence frequency `(upsilon)=40,000` Hz
Wave length `(lambda)=` distance between two consecutive compression or rarefaction pulses.
`lambda=1` cm
From `v= upsilon lambda = 40,000 Hz xx 1 cm= 40,000 cm//s=400 m//s`
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