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InterviewSolution
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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 . |
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Answer» (c) Wavelength . EXPLANATION: When the sound wave is being sent by a tuning fork, its displacement amplitude, frequency and the time period will remain the same even if the temperature changes. Since the velocity of the sound V ∝ √T where T is the temperature in °K. Thus with the increase in temperature V increases, but = V/ν. Here ν is constant hence with the increase in V the wavelength also increases. Hence the option (c). |
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