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Asked in NEET 1988 · Speed of sound in a gas
Idea: a mechanical wave travels at a speed set by how stiff the medium is and how heavy it is — not by anything about the wave itself.
For a gas, Laplace's result is v=√(γ P)/ρ, which can also be written v=√B/ρ.
B is the bulk modulus, a measure of the gas's elasticity, and ρ is its density.
Neither the frequency, the amplitude nor the intensity of the sound enters that expression.
So the speed depends on the density and elasticity of the gas.
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