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Question

Transverse waves are produced in a stretched wire. Both ends of the string are fixed. Let us compare between second overtone mode (in numerator) and fifth harmonic mode (in denominator). match the following two columns.

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Solution

Second overtone means third harmonic and hence there will be three antinodes. In fifth harmonic there will be 5 antinodes.

A: Since f1λnlf2f5=35

B. Number of nodes ratio is 2+24+2=46=23

C: Number of antinodes ratio is 35 since number of antinodes are proportional to the number of harmonics.

D: Wavelength is proportional to 1f, hence λ1λ2=53.

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