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Question

The diagram in the figure shows three ways in which the string of length l in an instrument can vibrate.

(a) Which of the diagram shows the principal note?

(b) Which vibration has the frequency four times that of the first?

(c) Which vibration is of longest wavelength?

(d) What is the ratio of frequency of vibrations in diagram (i) and (ii)?


Solution

a) Diagram (i) is showing the principal note.

b) Diagram (iii) has frequency four times that of the first.

(c) The longest wavelength is of (i).

(d) As one wave is formed in (i) and two waves in (ii), the ratio of frequencies is 1:2.


Physics
Concise Physics
Standard X

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