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A source of sound S emitting waves of fr...

A source of sound 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 of `19.4 ms^(-1)` at an angle of `60^@` with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air `330 ms^(-1)`), is:

A

97 Hz

B

100 Hz

C

103 Hz

D

106 Hz

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TARGET PUBLICATION-Sound-Exercise
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  3. A source of sound S emitting waves of frequency 100 Hz and an observer...

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  4. A drone fitted with siren in flying directly away from the drone opera...

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  5. A siren placed at a railway platform is emitting a sound of frequency ...

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  6. Two trains A and B are approaching a platform from opposite direction...

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  7. A train has just completed a U-curve in a track which is a semicircle....

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  8. A car is moving with a speed of 72 km-hour^(-1) towards a roadside sou...

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  9. The velocity of sound is greatest in

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  10. A heavy ball of mass M is suspended from the ceiling of a car by a lig...

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  11. The transverse displacement of a string clamped at both ends is by y (...

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  13. A uniform rope of length L and mass m1 hangs vertically from a rigid s...

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  14. A granite rod of 60 cm length is clamped at its middle point and is se...

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  15. At a temperature of 314 K and a pressure of 100 kPa, the speed of soun...

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  16. The extension in a string, obeying Hooke’s law, is x. The speed of the...

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  17. When sound is produced in an aeroplane moving with a velocity of 250 m...

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  18. Neon is 20 times heavier than hydrogen. The equal volumes of hydrogen ...

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  19. Sound waves in air are always longitudinal, because

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  20. Which of the following doesn’t produce a sound wave?

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