. The diagram below shows three different modes of vibration P, Q and R of the same string of a givens length


The diagram below shows three different modes of vibration P, Q and R of the same string of a givens length.

The diagram

(a) Which vibration will produce a louder sound and why?

(b) Which vibration will produce sound of maximum shrillness (or pitch) and why?

(c) What is the ratio of wavelength of vibrations P and R?

 

Best Answer

(a) R will produce maximum sound because it has maximum amplitude.

(b) P will produce maximum shrillness because it has maximum frequency.

(c) Lets suppose string has length l

Then wavelength of P=2l/3

Wavelength of R=2l

Wavelength

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