D When beats are produced by two progressive waves of nearly

Last updated: 6/21/2023

D When beats are produced by two progressive waves of nearly the same frequency which one of the following is correct a The particles vibrate simple harmonically with the frequency equal to the difference in the component frequencies b The amplitude of vibration at any point changes simple harmonically with a frequency equal to the difference in the frequencies of the two waves c The frequency of beats depends upon the position where the observer is d The frequency of beats changes as the time progresses