The length of the string of a musical instrument is 90 cm and has a fundamental frequency of 120 Hz Where should it be pressed

Question

The length of the string of a musical instrument is 90 cm and has a fundamental frequency of 120 Hz Where should it be pressed to produce fundamental NEET 2020 Phase 2 frequency of 180 Hz 1 80 cm 2 75 cm 3 60 cm 4 45 cm

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