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Mechanical Properties Of Fluids

Question

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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

286.5 HZ

481 Hz

434.2 Hz

580 Hz

Solution

434.2 Hz

$The frequency of siren = 500 Hz The speed of siren ν_{s} = 50 m / s Using Doppler' s principle n' = \frac{ν}{ν + ν_{s}} n \Rightarrow n' = (\frac{330}{330 + 50}) \times 500 \Rightarrow n' = \frac{330 \times 500}{380} = 434.2 Hz$

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Mechanical Properties Of Fluids

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

286.5 HZ

481 Hz

434.2 Hz

580 Hz

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For Daily Free Study Material Join wiredfaculty

Mechanical Properties Of Fluids

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 286.5 HZ 481 Hz 434.2 Hz 580 Hz

Some More Questions From Mechanical Properties of Fluids Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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

286.5 HZ

481 Hz

434.2 Hz

580 Hz