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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveDopler's effectEasy2 minPYQ_2020

PhysicsEasysingle choice

A sounding source of frequency 500 Hz moves towards a stationary observer with a velocity of $30 m s^{- 1}$ . If the velocity of sound in air is $330 m s^{- 1}$ , find frequency heard by the observer.

Options:

Answer:

Solution:

$f = 500 Hz$ $v_{o} = 0$

$v_{s} = 30 m s^{- 1}, v = 330 m s^{- 1}$

From ,

$f^{'} = f (\frac{v - v_{o}}{v - v_{s}}) = 500 (\frac{300}{330 - 30}) = 550 Hz$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Sound WaveSubtopic:Dopler's effect

⏱ 2mℹ️ Source: PYQ_2020

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