Question
Download Solution PDFThe frequency of a sound wave is 200 Hz and its wavelength is 2 m. What is the speed of the sound wave?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Wavelength (λ): The space or length between two successive crests or troughs of a wave is called the wavelength.
- Frequency (f): It is the number of occurrences of a repeating event per unit of time. Its SI unit is Hertz (Hz).
- Velocity (v): Velocity is defined as the rate of change of displacement of a body with respect to time. The SI unit is meter per second (ms-1).
The speed can be calculated using the formula:
speed (v) = wavelength (λ) x frequency (f).
EXPLANATION:
Given that:
Wavelength (λ) = 2 m
Frequency (f) = 200 Hz
Speed (v) = f × λ
⇒ v = 200 x 2
⇒ v = 400 m/s. Hence option 1 is correct.
Last updated on Jun 7, 2025
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