Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveMiscellaneousHard2 minPYQ_2020

PhysicsHardsingle choice

The block of mass $m_{0} = μ L$ is attached to a uniform string of mass $M = μ L$ and length $L$ as shown in the figure. If a wave pulse is produced near the block, then the time it takes to reach the ceiling is

Options:

Answer:

Solution:

At x position tension in string

$T = m_{o} g + μ x g$

$V = \sqrt{\frac{T}{μ}} = \sqrt{(L + x) g}$

$\int_{o}^{t} \frac{d x}{\sqrt{(L + x) g}} = \int_{o}^{t} d t$

$T = 2 (\sqrt{2} - 1) \sqrt{\frac{L}{g}}$

Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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