In a ripple tank 100 waves pass through a certain point in one second. If the wavelength of the wave is 1cm then the speed of the wave will be?
Correct answer: A. 1 ms-1
- A. 1 ms-1
- B. 2 ms-1
- C. 3 ms-1
- D. 4 ms-1
Explanation
Frequency=100, Wavelength= 1cm = 1/100 = 0.01m. Frequency = Speed/Wavelength (Frequency) (Wavelength) =Speed (100)(0.01)=1m/s.
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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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