Question

A tunning fork sends a sound waves in air .if temperature of air increases , which of the following parameters will change

A. Time period

B. Frequency

C. Wavelength

D. All of these

Answer 1

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, , where v is the speed of sound wave, f is the frequency and  is the wavelength of sound wave. Thus, if speed of sound changes and frequency remains same, then the wavelength must change. Frequency of a wave is the reciprocal of its time period, so time period will also not change. Therefore, the correct option is (c).

Answer 2

Heya.....

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QUESTION:- A tunning fork sends a sound waves in air .if temperature of air increases , which of the following parameters will change

A. Time period

B. Frequency

C. Wavelength

D. All of these

ANSWER:- wavelength

Option C. WAVELENGTH WILL CHANGE

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Hope it helps