Home
Class 9
PHYSICS
A narrow sound pulse (for example, a sho...

A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium. (a) Does the pulse have a definite (i) wavelength, (ii) frequency, (iii) speed of propagation ? (b) If the pulse rate is `1` after every `20 s`, (i.e. the whistle is blown for a split second after every `20 s`) is the frequency of the note produced by the whistle equal to `(1)/(20) = 0.05 Hz` ?

Text Solution

Verified by Experts

A narrow sound pulse such as a short pip by a whistle does not have a definite wavelength or frequency. However, being a sound wave, it has a definite speed.
Promotional Banner

Topper's Solved these Questions

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Subjective Problems) Long Answer Type|10 Videos

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Integer/Numerical Value Type)|3 Videos

  • SOUND

    MTG IIT JEE FOUNDATION|Exercise Exercise (Subjective Problems) Very Short Answer Type|15 Videos

  • MOTION

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|21 Videos

  • THRUST AND PRESSURE

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|15 Videos

Similar Questions

Explore conceptually related problems

A narrow sound pulse (for example, short pip by a whistle ) is sent across a medium. (a) Does the pulse have a definite (i) wavelength (ii) frequency (iii) speed of propagation. (b) If the pulse rate is 1 after every 20s, i.e. the whistle is blown for a split second after every 20 second, is the frequency of the note produced by the whistle equal to 1//20=0.05Hz?

A narrow pulse (for example, a short pip by a whistle) is sent across a medium. If the pulse rate is 1 after every 20 s (that is the whistle is blow for a split of second after every 20 s). Is the frequency of the note produced by the whistle equal to 1//20 or 0.05 Hz ?

The engine of a train sound a whistle at frequency v, the frequency heard by a passenger is

An observer on a railway platform noticed that when a train passed through the station, at a speed of 72 kg h^(-1) , the frequency of the whistle appeared to drop by 500 Hz. Calculate the actual frequency of the note produced by the whistle. Velocity of sound in air = 340 ms^(-1) .

A: When a narrow pulse of light is sent through a medium, it doesn't retain its shape as it travels through the medium. R: Since the speed of propagation in a medium depends on wavelength , different wavelength components of the pulse travel with different speeds.

A train, blowing a whistle of frequency f, is standing in the railway yard A person is running towards the engine. The frequency of the sound of the whistle as heard by the person will be

A fire whistle emits a tone of 170 Hz. Take the speed of sound in air to be 340 m/s. The wavelength of this sound is about

A man standing on a platform observes that the frequency of the sound of a whistle emitted by a train drops by 140 Hz. If the velocity of sound in air is 330 m/s and the speed of the train is 70 m/s, the frequency of the whistle is

MTG IIT JEE FOUNDATION-SOUND-Exercise (Subjective Problems) Short Answer Type
  1. The sound of an explosion on the surface of a lake is heard by a boat...

    Text Solution

    |

  2. The sound of an explosion on the surface of a lake is heard by a boat...

    Text Solution

    |

  3. A large auditorium has a curved back. Explain.

    Text Solution

    |

  4. Two waves are shown below. Which of the two corresponds to lower decib...

    Text Solution

    |

  5. What is the difference between an echo and a reverberation ?

    Text Solution

    |

  6. (a) A sound wave travelling in a medium is represented . (i) Which l...

    Text Solution

    |

  7. A sound wave travelling in a medium is represented as shown in the fig...

    Text Solution

    |

  8. (a) A sound wave travelling in a medium is represented . (i) Which l...

    Text Solution

    |

  9. A big explosion on the moon cannot be heard on the earth because

    Text Solution

    |

  10. Where is reverberation desirable and where is this to be avoided ?

    Text Solution

    |

  11. A narrow sound pulse (for example, a short pip by a whistle) is sent a...

    Text Solution

    |

  12. A narrow pulse (for example, a short pip by a whistle) is sent across ...

    Text Solution

    |

  13. A snapshot is taken of a periodic wave travelling on a string as shown...

    Text Solution

    |

  14. The frequency of a source of sound is 100 Hz. How many times does it v...

    Text Solution

    |

  15. When we nibble at a rusk, we hear a noise that is simply deafening. Bu...

    Text Solution

    |

  16. A sonar device on a submarine sends out a signal and receives an echo ...

    Text Solution

    |

  17. Waves of higher frequencies are used for cleaning hard-to-reach places...

    Text Solution

    |

  18. Waves of higher frequencies are used for cleaning hard-to-reach places...

    Text Solution

    |

  19. Waves of higher frequencies are used for cleaning hard-to-reach places...

    Text Solution

    |

  20. An observer notes that there is a 6 second interval between seeing a f...

    Text Solution

    |