The distance between two consecutive crests of a travelling wave is 10 cm. If the speed of the wave is 50 cm/s, then its frequency would be:
Correct answer: C. 5 Hz
- A. 40 Hz
- B. 1/5 Hz
- C. 5 Hz
- D. 500 Hz
Explanation
The equation is given by:v = f \λOn rearranging the equation for frequency, we get,f = v/λPutting values:f = (50 cm/s)/10 cmf = 5 Hz
Last updated
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.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A stationary source of sound produces wave of wavelength L and speed v. Now the source moves away from the observer. What is the wavelength and speed of sound as measured by the observer?
A wave of frequency 500 Hz travels at 340 m per second. Its wavelength is
A wave travelling with speed of 130m/s having a wavelength of 5m. What is its frequency:
Doppler effect applies to____________________?
Frequency of a travelling wave is 2000 Hz. Its speed is 300m/s. What is its wavelength?