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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

It takes $2.0 s$ for a sound wave to travel between two fixed points when the day temperature is $10 ° C$ . If the temperature rises to $30 ° C$ , the sound wave travels between the same fixed parts in

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Answer:

Solution:

Velocity of sound $v \propto \sqrt{T}$

Time

$t \propto \frac{1}{\sqrt{v}}$

$∴ t \propto \frac{1}{\sqrt{T}}$

$\frac{t_{1}}{t_{2}} = \sqrt{\frac{T_{1}}{T_{2}}}$

$\frac{2}{t_{2}} = \sqrt{\frac{273 + 30}{273 + 10}}$

$\frac{2}{t_{2}} = \sqrt{\frac{303}{283}} = 1.03$

$t_{2} = \frac{2}{1.03} = 1 .9 s$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Sound WaveSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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