Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringEquation/graphEasy2 minPYQ_2020

PhysicsEasysingle choice

A wire is $4 m$ long and has a mass $0.2 kg$ . The wire is kept horizontally. A transverse pulse is generated by plucking one end of the taut (tight) wire. The pulse makes four trips back and forth along the cord in $0.8 \sec$ . The tension in the cord will be

Options:

Answer:

Solution:

$4$ trips means $32 m$

Wave speed is,

$v = \frac{d}{t} = \frac{32}{0.8} = 40 m s^{- 1}$

$v = \sqrt{\frac{T}{μ}}$

Therefore, tension in the cord is,

$T = μ v^{2}$

$T = \frac{0.2}{4} \times {(40)}^{2} = \frac{2 \times 16 \times 10}{4}$

$T = 80 N$

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

⏱ 2mℹ️ Source: PYQ_2020

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