Home
Class 12
PHYSICS
A tuning fork of unknown frequency makes...

A tuning fork of unknown frequency makes 5 beats per second with another tuning fork which can cause a closed organ pipe of length 40 cm to vibrate in its fundamental mode. The beat frequency decreases when the first tuning fork is slightly loaded with wax, Find its original frequency. The speed of sound in air is 320 m/s.

Text Solution

Verified by Experts

205 Hz
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|81 Videos

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise EXERCISE (VERY SHORT ANSWER QUESTIONS)|25 Videos

  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET ADVANCED (INTEGER TYPE QUESTIONS)|10 Videos

  • WAVE OPTICS

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|20 Videos

Similar Questions

Explore conceptually related problems

A tuning fork of frequency 250Hz produces 4 beats per second with a wire of length 25cm vibrating in its fundamental mode. The beat frequency decreases when the length is slightly shortened. What could be the minimum length by which the wire be shortened so that it produces no beats with the tuning fork?

Tuning fork A of frequency 258 Hz gives 8 beats with a tuning fork B. When the tuning fork A is filed and again A and B are sounded the number of beats heard decreases. The frequency of B is

A tuning fork of frequency 340 Hz produces 5 beats per second with a sonometer wire. If the tension is slightly increased the number of beats becomes 4. The frequency of sonometer wire is

Tuning fork A of frequency 258 Hz gives 8 beats with a tuning fork B. When fork B is filed and again A and B are sounded the number of beats heard remains same. The frequency of B is

A string 25 cm long and having a mass of 2.5g is under tension. A pipe closed at one end is 40 cm long. When the string is set vibrating in its firsy overtone and the air in the pipe in its fundamental frequency, 8 beats per sec are heard. It is observed that decreasing the tension in the string decreases the beat frequency. If the speed of sound in air is 320 m/s, find the tension in the string.

AAKASH SERIES-WAVE MOTION AND SOUND-PROBLEMS (LEVEL - I)
  1. An organ pipe has two successive harmonics withb frequencies 400 and 5...

    Text Solution

    |

  2. The fundamental frequency of a closed organ pipe is 220 Hz. Find t...

    Text Solution

    |

  3. The fundamental frequency of a closed organ pipe is 220 Hz. The sec...

    Text Solution

    |

  4. A source of frequency 10 kHz when vibrated over the mouth of a closed ...

    Text Solution

    |

  5. A closed pipe and an open pipe of same length produce 2 beats, when th...

    Text Solution

    |

  6. A tuning fork produces 4 beats per second with the other tuning fork o...

    Text Solution

    |

  7. Two tuning forks when sounded together produce 5 beats in 2 seconds. T...

    Text Solution

    |

  8. Two progressive waves y(1) = 4 sin 400 pi t and y(2) = 3 Sin 404 pi t ...

    Text Solution

    |

  9. Calculate the frequency of beats produced in air when two sources of s...

    Text Solution

    |

  10. Two sitar string A and B playing the note 'Ga' are slightly out of tun...

    Text Solution

    |

  11. The frequency of a tuning fork 'A' is 2% greater than that of a standa...

    Text Solution

    |

  12. A man standing at some distance from a cliff hears the echo of sound a...

    Text Solution

    |

  13. A motor car approaching a cliff with a velocity of 90 kmph sounds the ...

    Text Solution

    |

  14. A person standing between two parallel hills fires a gun. He hears the...

    Text Solution

    |

  15. A tuning fork of unknown frequency makes 5 beats per second with anoth...

    Text Solution

    |

  16. A traffic policeman standing on a road sounds a whistle emitting the m...

    Text Solution

    |

  17. A person riding a car moving at 72 km/h sounds a whistle emitting a wa...

    Text Solution

    |

  18. A person riding a car moving at 72 km/h sounds a whistle emitting a wa...

    Text Solution

    |

  19. A car moving at 108 km/h finds another car in front of it going in the...

    Text Solution

    |

  20. A tuning fork of frequency 328 Hz is moved towards a wall at a speed o...

    Text Solution

    |