Q. 45.0( 3 Votes )

A tuning fork sends sound waves in air. If the temperature of the air increases, Which of the following parameters will change?
A. Displacement amplitude

B. Frequency

C. Wavelength

D. Time period

Answer :

When the sound wave is being sent by a tuning fork, Since the velocity of the sound V T where T is the temperature in °K. Thus with the increase in temperature V increases, but . Here ν is constant hence with the increase in V the wavelength 𝛌 also increases. Hence the option C is correct.

A tuning fork sends sound waves in air, and displacement amplitude, frequency and time period do not change with the increase in temperature of air. So, option A, B and D is incorrect.

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