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Air is blown at the mouth of an open tub...

Air is blown at the mouth of an open tube of length 25
cm and diameter 2 cm. If the velocity of sound in air is
`330 ms^(-1)`, then the emitted frequencies (in Hz) are

A

660, 1320, 2640

B

660, 1000, 3300

C

302, 664, 1320

D

330, 990, 1690

Text Solution

Verified by Experts

The correct Answer is:
a
`v= n lambda`
`n =v/(2l) =330/(2xx25)=660`Hz `(because l = lambda/2)`
`rArr n_(1)=2xx660=1320 ` Hz
and `n_(2)=2xx 1320 = 2640 `Hz
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-STATIONARY WAVES -EXERCISE 1
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  12. An open organ pipe has fundamental frequency 100 Hz. What frequency wi...

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  13. A pipe closed at one end open at the other end, resonates with sound w...

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  14. A glass tube is open at both the ends. A tuning fork of frequency f re...

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  16. The end correction of a resonance colume is 1.0 cm.If the shortest len...

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  17. The vibrating of four air columns are represented in the figure. The ...

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  18. Air is blown at the mouth of a tube of length 25 cm and diameter equal...

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  19. A closed organ pipe of length 20 cm is sounded with tuning fork in res...

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