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Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringMiscellaneousHard2 minPYQ_2020

PhysicsHardsingle choice

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 frequency of $180 Hz ?$ NEET 2020 (Phase 2)

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Answer:

Solution:

The fundamental frequency in terms of speed of wave and length between two boundaries, $ν = \frac{v}{2 l}$ , it means.

$\frac{ν_{1}}{ν_{2}} = \frac{l_{2}}{l_{1}}$

$\Rightarrow l_{2} = \frac{l_{1} ν_{1}}{ν_{2}} = \frac{90 \times 120}{180} = 60 cm$

Stream:NEETSubject:PhysicsTopic:Wave on StringSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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