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An engine driver moving towards a wall w...

An engine driver moving towards a wall with velocity of `50ms^(-1)` emits a note o frequency 1.2kHz. The frequyency of note after reflection from the wall is eard by the engine driver when speed of sound in air is `350ms^(-1)` is

A

`1 kHz`

B

`1.8 kHz`

C

`1.6 kHz`

D

`1.2 kHz`

Text Solution

Verified by Experts

The correct Answer is:
C
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RESONANCE ENGLISH-SOUND WAVES-Exercise- 1 PART - II
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  4. A person is talking in a small room and the sound intensity level is 6...

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  5. An interference is observed due to two coherent sources separated by a...

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  6. When a sound wave is reflected from a wall the phase difference betwee...

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  7. If lambda(1), lamda(2)and lamda(3) are the wavelengths of the wave giv...

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  8. An open organ pipe of length l vibrates in its fundamental mode. The p...

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  9. The fundamental frequency of a closed organ pipe is sam eas the first ...

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  10. Two identical tubes A and B are kept in air and water respetively as s...

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  11. A tube of diameter d and of length l is open a both ends. Its fundamen...

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  12. The second overtone of an open pipe A and a closed pipe B have the sam...

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  13. A resonance tube is resonated with tunning fork of frequency 256Hz. If...

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  14. A sound source of frequency 512 Hz is producing 6 beats with a guitar....

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  15. Three sound waves of equal amplitudes have frequencies (v -1), v, (v +...

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  16. A closed organ pipe and an open organ pipe of same length produce 4 be...

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  17. Which of the following does not affect the apparent frequency in doppt...

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  18. An engine driver moving towards a wall with velocity of 50ms^(-1) emit...

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  19. Source and observer start moving simulatneously along x and y-axis res...

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  20. A small source of sound moves on a circle as shown in figure and an ob...

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