Home
Class 12
PHYSICS
31 tuning forks are arranged in series i...

31 tuning forks are arranged in series in increasing order of frequencies and the frequency of the last tuning fork is 3 times the frequency of the first. If each tuning fork produces 4 beats/second with the preceding one, the frequency of the last tuning fork is

A

30 Hz

B

60 Hz

C

90 Hz

D

180 Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`3n = n + (31 -1) xx 4`
`2n = 120 :. n = 60`
`:.` frequency of the last tuning fork = 180 Hz
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    MARVEL PUBLICATION|Exercise Test your grasp|15 Videos

  • SURFACE TENSION

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS . (TEST YOUR GRASP )|10 Videos

  • WAVE THEORY OF LIGHT AND POLARISATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP -10|15 Videos

Similar Questions

Explore conceptually related problems

To reduce the frequency of a tuning fork –

When temreture increases, the frequency of a tuning fork

When temperature increases, the frequency of a tuning fork

64 tuning forks are arranged in order of increasing frequency. The frequency of the last fork is double of the first and each two consecutive forks produce 4 beats per second. Calculate the frequency of the last fork.

When one of the prong of a tuning fork is waxed a little then frequency of the fork will

A tuning fork produces 4 beats/s with a sonometer wire when its lengths are 50cm , 51cm . The frequency of that tuning fork is

25 tunning forks are arranged in series in the order of decreasing frequency. Any two successive forks produce 3 beats/sec. If the frequency of the first turning fork is the octave of the last fork, then the frequency of the 21st fork is

50 tunning forks are arranged in increasing order of their frequencies such that each gives 4 beats/sec with its previous tuning fork. If the frequency of the last fork is octave of the first, then the frequency of the first tuning fork is

11 tuning forks are arranged in increasing order of frequency.Each gives 8 beat/s with previous one.If 11 ^(th) fork is octave of 1^(st) fork then the frequency of 10^(th) fork is

A set of 10 tuning forks is arranged in series of increasing frequency. If each fork gives 3 beats with the preceding one and the last fork has twice the frequency of the first, then frequency of the first tuning fork is

MARVEL PUBLICATION-WAVE MOTION-Test your grasp
  1. 31 tuning forks are arranged in series in increasing order of frequenc...

    Text Solution

    |

  2. In a sinusoidal wave, the time required by a particular particle to mo...

    Text Solution

    |

  3. A longitudinal wave in air is travelling towards the closed base of me...

    Text Solution

    |

  4. If the amplitude of a wave at a distance r from a point source is A, t...

    Text Solution

    |

  5. The equation of a progressive wave is given by y = 5 sin [pi ((t)/(5...

    Text Solution

    |

  6. A simple harmonic wave is represent by the relation y(x,t)=a(0) sin ...

    Text Solution

    |

  7. Two waves of equal amplitude when superposed, give a resultant wave ha...

    Text Solution

    |

  8. A set of 11 tuning forks is arranged in the ascending order of frequen...

    Text Solution

    |

  9. An unknown frequency x produces 8 beats per seconds with a freuquency ...

    Text Solution

    |

  10. Two sound waves of wavelength (92)/(147) m and (92)/(149)m produce 8 b...

    Text Solution

    |

  11. Wavelengths of two sound notes in air are (80)/(177)m and (80)/(175)m ...

    Text Solution

    |

  12. A whistle revolves in a circle with an angular speed of 20 rad//sec us...

    Text Solution

    |

  13. An observer moves towards a stationary source of sound, with a veloci...

    Text Solution

    |

  14. Two sources A and B are sounding notes of frequency 680 Hz. A listener...

    Text Solution

    |

  15. A man is watching two trains, one leaving and the other coming in with...

    Text Solution

    |

  16. A tuning fork A having a frequency of 300 Hz is sounded together with ...

    Text Solution

    |