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Describe the effect of various factors on the speed of sound? Effect of various factors on the speed of sound are here: Effect of various factors on the speed of sound (1)Effect of pressure on the speed of sound From Laplace’s formula for the speed of sound in a gas, v =√ (ϒP/ρ), it appears that the speed of sound (v) must change with change in pressure. But actually it is not like that Consider 1 gm-molecule of gas whose pressure and volume are P and V respectively. If T be the absolute temperature of the gas, then according to the gas equation: PV = RT, where R is the universal gas constant. If molecular weight of the gas be M and density is ρ, then V = M/ρ, and we get: P (M/ρ) = RT   or P/ρ = RT/M= constant. Here if T is constant i.e., at the constant temperature, if P changes then ρ also changes in such a way that the ratio P/ρ remains constant. Hence, in the Laplace’s formula v =√ (ϒP/ρ), the value of P/ρ does not change when P changes. From this it is cle...