A student performed the resonance tube e...

A student performed the resonance tube experiment by using a tuning fork of frequency 512 Hz. He obtained the first and second resonances at `30.7` cm and `63.2` cm respectively . What was the error in the measurement of the velocity of sound, if the actual speed of sound at the temperature of the experiment was 330 m/s ?

80 cm/s

140 cm/s

180 cm/s

280 cm/s

Text Solution

Verified by Experts

The correct Answer is:

`v = 2n(l_(2) - l_(1)) = 2 xx 512 xx (63.2 - 30.7) = 33280 `cm/s
Actual velocity ` = 3300m//s = 33000` cm/s
` :. " Error " = 33280 - 33000 = 280` cm/s

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