An ideal gas is maintained at constant temperature while its pressure is increased quasistatically. What happens to the speed of sound in the gas?
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Question

An ideal gas is maintained at constant temperature while its pressure is increased quasistatically. What happens to the speed of sound in the gas?

G1 Physics · Accepted Answer

For an ideal gas, v = √(γP/ρ). At constant temperature, P/ρ = RT/M is constant. Hence, v = √(γRT/M) is independent of pressure when temperature is fixed. Correct option: C.