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Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringEquation/graphEasy2 minPYQ_2020

PhysicsEasysingle choice

A string of density $7.5 g {cm}^{- 3}$ and area of cross-section $0.2 m m^{2}$ is stretched under a tension of $20 N$ . When it is plucked at the mid-point, the speed of the transverse wave on the wire is

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Answer:

Solution:

The speed of transverse wave,

$v = \sqrt{\frac{T}{m}}$

Given, $T = 20 N$

$\frac{M}{l} = \frac{d \times A l}{l} = d \times A$

$∴ v = \sqrt{\frac{20 \times 10^{- 3}}{7 .5 \times 0 .2 \times {(10^{- 3})}^{2}}}$

$v \approx 116 m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave on StringSubtopic:Equation/graph

⏱ 2mℹ️ Source: PYQ_2020

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