Explain the reflection of transverse and longitudinal waves from a denser medium and a rarer medium.
Important Questions on Waves
(a) What are the wavelengths of the fundamental and the first two overtones?
(b) What are the frequencies of these standing waves?
[Note: In this case, fixed end is a node and the end tied with the light string is antinode.]
(a) If the amplitude of incident wave is , what are the amplitudes of reflected and transmitted waves?
(b) Assuming no energy loss in the wire, find the fraction of the incident power that is reflected at the junction and fraction of the same that is transmitted.
A wave pulse on a string has the dimensions shown in figure. The wave speed is .
(a) If point is a fixed end, draw the resultant wave on the string at and .
(b) Repeat part (a) for the case in which is a free end.
The pulse shown in figure has a speed of .
(a) If the linear mass density of the right string is that of the left string, at what speed does the transmitted pulse travel?
(b) Compare the heights of the transmitted pulse and the reflected pulse to that of the incident pulse.
Two sitar strings A and B playing the note ‘Ga’ are slightly out of tune and produce beats of frequency . The tension in the string A is slightly reduced and the beat frequency is found to reduce to . If the original frequency of A is , what is the frequency of B?
