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Question

Atuning fork sends sound waves in air. If the temperature of the air increases which parameters will change


Solution

The frequency of a wave depends on the source by which the waves are produced. The frequency of a wave is fixed and does not change even when it passes through different substances. However, the speed of sound changes, when it travels from one medium to another. As, v=f×λ, where v is the speed of sound wave, f is the frequency and λ is the wavelength of sound wave. Thus, if speed of sound changes and frequency remains same, then the wavelength must change. 

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