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A guitar string is 90 cm long and has a ...

A guitar string is 90 cm long and has a fundamental frequency of 124 Hz. Where should it be pressed to produce a fundamatal frequecy of 186 Hz?

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The correct Answer is:
A, B, C, D
`f prop 1/l`
`:. f_(1)/f_(2) = l_(2)/l_(1)` or `l_(2) = (f_1/f_2)l_1`
= `(124/186)(90 cm) = 60 cm` .
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DC PANDEY-SUPERPOSITION OF WAVES-Level 1 Subjective
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