Frequency of a travelling wave is 2000 Hz. Its speed is 300m/s. What is its wavelength?
Correct answer: C. 3/20 m
- A. 20/3 m
- B. 20x3 m
- C. 3/20 m
- D. 2/3 m
Explanation
The following is the solution:We know that speed of a travelling wave = frequency x wavelengthfrom here:wavelength = speed / frequencyTherefore, wavelength = 300/2000wavelength = 3/20
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About Wave Speed
Wave speed is the rate at which a disturbance or wave pattern travels through a medium, given by v = fλ, where f is frequency and λ is wavelength. Questions examine how speed changes between media, the relation among frequency, wavelength and period, and why wave speed is not the same as particle vibration speed.
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