The tension in a stretched string fixed at both ends is changed by 2%, the fundamental frequency is found to get changed by 15 Hz. Select the correct statement(s) –
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(a, c, d)
Wavelength depends on length which is fixed. Therefore wavelength does not change.
Further 
or 
i.e., Speed and hence frequency will change by 
.
Change in frequency is 15 Hz which is 
of 1500 Hz.
Therefore, original frequency should be 1500 Hz .
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