Home
Class 11
PHYSICS
A tuning fork of known frequency 256 Hz ...

A tuning fork of known frequency `256 Hz` makes `5` beats per second with the vibrating string of a piano. The beat frequency decreases to `2` beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was

A

256 + 5 Hz

B

256 + 2Hz

C

256 – 2 Hz

D

256 – 5Hz

Text Solution

Verified by Experts

The correct Answer is:
D
`f_(A)=256Hz,f_("beat")=5`
As `Tuarr` (i.e. `f_(B)uarr`), `f_("beat")darr`
`f_(A)-f_(B)=f_("beat")` (Possible)
`implies f_(B)=256-5Hz`.
Promotional Banner

Topper's Solved these Questions

  • WAVES AND SOUND

    ERRORLESS|Exercise NCERT BASED QUESTIONS (STATIONARY WAVES)|10 Videos

  • WAVES AND SOUND

    ERRORLESS|Exercise NCERT BASED QUESTIONS (VIBRATION OF STRING) |29 Videos

  • WAVES AND SOUND

    ERRORLESS|Exercise NCERT BASED QUESTIONS (INTERFERENCE AND SUPERPOSITION OF WAVES)|23 Videos

  • UNITS, DIMENSIONS AND MEASUREMENT

    ERRORLESS|Exercise ASSERTION & REASON |17 Videos

  • WORK, ENERGY POWER AND COLLISION

    ERRORLESS|Exercise ASSERTION & REASON |22 Videos

Similar Questions

Explore conceptually related problems

A tuning fork of frequency 512 Hz makes 4 beats//s with the vibrating string of a piano. The beat frequency decreases to 2 beats//s when the tension in the piano string is slightly increased.The frequency of the piano string before increasing the tension was

A tuning fork of frequency 256 Hz gives 5 beats // s with a vibrating string of a piano. The beat frequency decreases to 2, when tension in the string is slightly increased. What was the frequency of the piano string before increasing the tension ?

A tuning fork of frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second are heard. The beat frequency reduces if the tension is the string is slightly increased . The original frequency of vibration of the string is

A tuning fork of frequency 512 Hz is vibrated with sonometer wire and 6 beats per seconds are heard. The beat frequency reduces if the tension in the string is slightly increased. The original freqency of vibration of the string is

A tuning fork of frequency 280 Hz produces 10 beats per see when sounded with a vibrating sonometer string. When the tension in the string increases slightly, it produces 11 beats per see. The original frequency of the vibrating sonometer string is :

If a tuning fork of frequency 512Hz is sounded with a vibrating string of frequency 505.5Hz the beats produced per sec will be

A tunning fork is frequency 512Hz is viberated with a sonometer wire and 6 beats per second ar heard The beat frequency reduces if the teknsion in the string of slightly increased. The original frequency of viberation of the string is

A tuning fork of unknown frequency makes 4.00 beats per second with a standard fork of frequency 384 Hz. The beat frequency decreases when a small piece of wax is put on a prong of the first fork. What is the frequency of this fork?

A tuning fork of frequency 256 Hz is producing 5 beats/sec with the vibrating string of a sitar. On increasing the tension in the string, the beat frequency becomes 3 beats/sec. The initial frequency of sitar before increasing the tension is

ERRORLESS-WAVES AND SOUND -NCERT BASED QUESTIONS (BEATS)
  1. The disc of a siren containing 60 holes rotates at a constant speed of...

    Text Solution

    |

  2. When a tuning fork produces sound waves in air, which one of the follo...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |