Velocity of sound in air increases with temperature decreases with temperature increase with pressur...........

General Science (Easy) Physics

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Velocity of sound in air

increases with temperature
decreases with temperature
increase with pressure
is independent of pressure
is independent of temperature

Only (i) and (ii) are true

Only (ii) and (iv) are true

Only (i) and (iii) are true

Only (i) and (iv) are true

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Explanation:

Only (i) and (iv) are true

At a constant temperature, the gas pressure has no effect on the speed of sound, since the density will increase, and since pressure and density (also proportional to pressure) have equal but opposite effects on the speed of sound, and the two contributions cancel out exactly.