Waves · JEE Preparation Physics
A sound wave of frequency f travels in air with speed v. If the temperature of air increases, how do the frequency and wavelength of the sound wave c…
Practice question from Waves (JEE Preparation Physics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-55300A
A sound wave of frequency travels in air with speed . If the temperature of air increases, how do the frequency and wavelength of the sound wave change?
- A.Frequency remains constant, wavelength increases.Correct answer
- B.Frequency increases, wavelength remains constant.
- C.Both frequency and wavelength increase.
- D.Frequency remains constant, wavelength decreases.
Solution
The frequency of a sound wave is determined solely by the source and does not change when the medium's temperature changes. The speed of sound in air increases with temperature (). From the relation , since increases and remains constant, the wavelength must increase.
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