Home
Class 12
PHYSICS
Two tuning forks A and B give 6 beats/s....

Two tuning forks A and B give 6 beats/s. The frequency of B is 432 Hz. When B is filed 4 beats/s are produced. The natural frequency of fork A is

A

438 Hz

B

426 Hz

C

483 Hz

D

462 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
`n_(A) = n_(B) +- 6`
`= 432 +- 6 = 438 or 426 Hz`
When known fork is filled and sounded with a produces 4 b/s.
`n_(A) = n_(B) +- 4 = 432 +-4 = 436 or 426`
When fork of known frequency is filled its frequency decreases by difference of beat frequency (2Hz).
`:. n_(A) = 426 Hz`
Promotional Banner

Topper's Solved these Questions

  • SURFACE TENSION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Question Given in MHT-CET )|31 Videos

  • WAVE THEORY OF LIGHT

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|303 Videos

Similar Questions

Explore conceptually related problems

Two tuning forks A and B give 4 beats/s when sounded together. If the fork B is loaded with wax 6 beats/s are heard. If the frequency of fork A is 320 Hz, then the natural frequency of the tuning fork B will be

Two tuning forks A and B give 4 beats per second. The frequency of A is 256 Hz . On loading B slightly, we get 5 beats in 2 seconds. The frequency of B after loading is [

Two tuning forks A and B produce 6 beats per second. Frequency of A is 300 H_(Z) . When B is slightly loaded with wax, beat frequency decreases . Find original frequency of B .

Two tuning forks A and B give 4 beats//s when sounded together . The frequency of A is 320 Hz . When some wax is added to B and it is sounded with A , 4 beats//s per second are again heard . The frequency of B is

A tuning fork A of frequency 512 Hz sounded with another tuning fork B gives 5 beats/sec. On loading B with a piece of wax, and on sounding, again 5 beats/sec are produced. Calculate the frequency of fork B.

Two tuning fork A and B are sounded together gives 5 beats per second. If frequency of B is 260 Hz and after loading B with was the beat frequency increases the frequency of A is

Two tuning forks A and B produce 8 beat/s when sounded together. When B is slightly loaded with a wax the beats are reduced to 4 per sec. If the frequency of A is 512 Hz, the frequency of B is

Two tuning forks A and B vibrating simultaneously produce 5 beats//s . Frequency of B is 512 Hz . If one arm of A is filed, the number of beats per second increases. Frequency of A is

NIKITA PUBLICATION-WAVE MOTION-Multiple Choice Questions
  1. Two sources S(1) and S(2) of sound having frequencies 338, 342 Hz are ...

    Text Solution

    |

  2. Fifty-six tuning forks are arranged in order of increasing frequencies...

    Text Solution

    |

  3. Two tuning forks A and B give 6 beats/s. The frequency of B is 432 Hz....

    Text Solution

    |

  4. The displacement of a particle is given by x = 3 sin ( 5 pi t) + 4 co...

    Text Solution

    |

  5. A tonometer consists of 16 forks, each fork produces 4 beats/s with th...

    Text Solution

    |

  6. A set of 25 tuning forks is arranged in order of decreasing frequency....

    Text Solution

    |

  7. The Doppler's effect is not applicable

    Text Solution

    |

  8. Two trains are moving towards each other and cross each other. The app...

    Text Solution

    |

  9. The Doppler's effect is not applicable

    Text Solution

    |

  10. Doppler's effect is due to

    Text Solution

    |

  11. When a source of sound moves towards a stationary observer the pitch o...

    Text Solution

    |

  12. When an observer moves towards a stationary source, then the apparent ...

    Text Solution

    |

  13. When an observer moves away from a stationary source of sound, the app...

    Text Solution

    |

  14. Two aeroplanes are moving towards each other. One of them blows a horn...

    Text Solution

    |

  15. Two aeroplanes are moving towards each other and cross each other. The...

    Text Solution

    |

  16. An observer is standing on a railway platform. He hears the whistle of...

    Text Solution

    |

  17. If apparent change in frequency of sound heard by a listener is less t...

    Text Solution

    |

  18. If the star approaches the earth. The Doppler lines are shifted

    Text Solution

    |

  19. Doppler shift in frequency does not depend upon

    Text Solution

    |

  20. When a source of sound is in motion towards a stationary observer, the...

    Text Solution

    |