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Physics - Sound Wave Question with Solution | TestHub

PhysicsSound WaveDopler's effectHard2 minPYQ_2004

PhysicsHardsingle choice

A siren emitting sound of frequency 500 Hz is going away from a stationary listener with a speed of $50 m / s$ , the frequency of sound heard directly from the siren is

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Solution:

Here: Frequency of siren $= 500 Hz$ The speed of siren $v_{s} = 50 m / s$ Using Doppler's principle $n^{'} = \frac{v}{v + v _{s}} n$ or $n^{'} = (\frac{330}{330 + 50}) \times 500$ or $n^{'} = \frac{330 \times 500}{380} = 434.2 Hz$

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

⏱ 2mℹ️ Source: PYQ_2004

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