Sound WavesHardBloom L3
Question
A note is produced when you blow air across the top of a test tube. Two students were asked about the effect of blowing harder.
Student-A : The pitch of sound would increase.
Student-B : The intensity of sound would increase
Options
A.A is correct, B is wrong
B.B is correct, A is wrong
C.both are correct
D.both are wrong
Solution
Sol. When the air is blown harder, velocity of sound increases, hence intensity $\left( I = \frac{1}{2}\rho A^{2}\omega^{2}v \right)$
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