1.

The speed of sound waves depends on temperature but speed of light waves does not. Why?

Answer»

Sound waves are mechanical waves whose velocity

\(v =\sqrt{\frac{\gamma RT}{M}} \)

Light waves are non-mechanical waves or electromagnetic waves for which

c = \(\frac{1}{\sqrt{\mu_0 ε_0}}\) where μ0 is absolute magnetic permeability of free space and ε0 is absolute electrical permittivity of free space. Therefore, v depends upon T, but c does not.



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