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The disc of a siren containing 60 holes ...

The disc of a siren containing 60 holes rotates at a constant speed of 360 rpm . The emitted sound is in unison with a tuning fork of frequency

A

10 Hz

B

360 Hz

C

216 Hz

D

6 Hz

Text Solution

Verified by Experts

The correct Answer is:
B

`f=(360xx60)/(60)=360Hz`.
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ERRORLESS-WAVES AND SOUND -NCERT BASED QUESTIONS (BEATS)
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  2. When a tuning fork produces sound waves in air, which one of the follo...

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  3. When a tuning fork vibrates, the waves produced in the fork are

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  4. Two turning forks of frequencies n(1) and n(2) produces n beats per s...

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  5. Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each pr...

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  6. Two vibrating tuning forks produce progressive waves given by y(1)=sin...

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  7. Two sound waves of wavelengths 5 m and 6 m formed 30 beats in 3 second...

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  8. Two waves of frequencies 20 Hz and 30 Hz. Travels out from a common po...

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  9. Each of the two strings of length 51.6 cm and 49.1 cm are tensioned se...

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  10. A tuning fork of frequency 250 Hz produces a beat frequency of 10 Hz w...

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  11. A tunig fork whose frequency as given by mufacturer is 512 Hz is being...

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  12. A tuning fork of frequency 480 Hz produces 10 beats per second when so...

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  13. A source of sound gives five beats per second when sounded with anothe...

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  14. Two sound waves of wavelengths 50 cm and 51 cm produce 12 beats per se...

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  15. Two strings X and Y of a sitar produce a beat frequency 4 Hz.When the ...

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  16. A tuning fork of known frequency 256 Hz makes 5 beats per second with ...

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  17. Two waves represented by the following equations are travelling in the...

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  18. When two tuning forks A and B are sounded together, 4 beats per second...

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