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At a constant temperature, pressure of a...

At a constant temperature, pressure of a gas is made 4 times. How is velocity of sound in the medium affected ?

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Velocity of sound `=sqrt((gamma P)/(rho))` . When P is made 4 times, `rho` also becomes 4 times. The ratio `P//rho` remains constant. Therefore, velocity of sound through the medium remains the same.
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