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Speed of Sound

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a source of sound S emitting waves of frequency 100Hz and an observer O are located at some distance from each other .the source is moving with a speed of 19.4m/s at angle of 60 degree with the source observer line as shown .the observer is at rest.the apparent frequency observed by the observer is (velocity of sound is 330m/s) 1.97Hz 2.100Hz 3.103Hz 4.106Hz

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Q. A source of sound 'S' emitting waves of frequency

100 H z

and an observer 'O' are located at some distance from each other. The source is moving with a speed of

19.4 m s^{- 1}

60^{o}

with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer is
(velocity of sound in air

330 m s^{- 1}

Q. A sound source S emitting waves of frequency

100 Hz

and an observer O are located at some distance from each other. The source is moving with a speed,

V_{S} = 19.4 {ms}^{- 1}

60^{\circ}

with line joining the source and the observe as shown in the figure. If the observer is at rest, the apparent frequency observed by the observer is
(Velocity of sound in air

330 {ms}^{- 1})

Q. An observer is moving away from a sound source of frequency 100Hz. If the observer is moving with a velocity 49m/s and the speed of sound in air is 330m/s, the observed frequency is :

Q. If a source emitting waves of frequency

f

moves towards an observer with a velocity

\frac{v}{4}

and the observer moves away from the source with a velocity

v / 6

, the apparent frequency as heard by the observer will be (

v =

velocity of sound)

Q. A source of sound is moving with a velocity of

50 m s^{- 1}

towards a stationary observer. The observer measures the frequency of sound as

500 H z

. The apparent frequency of sound as heard by the observer when source is moving away from him with the same speed is (Speed of sound at room temperature

350 m s^{- 1}

)

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