Home
Class 11
PHYSICS
A rocket is moving at a speed of 200ms^(...

A rocket is moving at a speed of `200ms^(-1)` towards a stationary target. While moving, it emits a wave of frequency 1000 Hz. Some of the sound reaching the target gets reflected back to the racket as an echo. Calculate the frequency of sound as detected by the person at the position of target and frequency of echo as detected by the rocket . Given velocity of sound `=330ms^(-1)`.

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A rocket is moving at a speed of 200ms^(-1) towards a stationary target. While moving, it emits a wave of frequency 1000hz. Some of the sound reaching the target gets reflected back to the racket as an echo. Calculate the frequency of sound as detected by the person at the position of tartget and frequecny of echo as detected by the rocket . Given velocity of soun =330ms^(-1) .

A rocket is moving at a speed of 220 ms^(-1) towards a stationary target. While moving, it emits a wave of frequency 500 Hz. What is the frequency of the sound as detected by the target?

A train moving at a speed of 220ms^-1 towards a stationary object emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is (speed of sound in air is 330ms^(-1) )

Towards a stationary object, a train is moving with a speed of 300 m/s and emits a sound wave of frequency 2000 Hz. Small percentage of the sound is reflected back to train in the form of echo. The frequency of the echo as detected by a person sitting in the train will be (speed of sound is 340 m/s).

SL ARORA-Waves-EXERCISE
  1. A rocket is moving at a speed of 200ms^(-1) towards a stationary targe...

    Text Solution

    |

  2. A radio station broadcasts its programme at 219.3 metre wavelength. De...

    Text Solution

    |

  3. The audible range of a human ear is 20 Hz to 20 kHz. Convert this into...

    Text Solution

    |

  4. The speed of a wave in a mediium is 960ms^(-1). If 3600 waves are pass...

    Text Solution

    |

  5. If the splash is hear 4.23 seconds after a stone is dropped into a wel...

    Text Solution

    |

  6. A stone is dropped into a well and its splash is heard at the mouth of...

    Text Solution

    |

  7. A body sends waves 100mm long through medium A and 0.25m long in mediu...

    Text Solution

    |

  8. A steel wire 70cm long has a mass of 7.0g. If the wire is under a tens...

    Text Solution

    |

  9. The speed of a transverse wave in a stretched string is 348 ms^(-1), w...

    Text Solution

    |

  10. Calculate the velocity of transverse wave in a copper wire 1 mm^(2) in...

    Text Solution

    |

  11. A wave pulse is travelling on a string of linear mass density 1.0 g cm...

    Text Solution

    |

  12. The diameter of an iron wire is 1.20 mm. If the speed of transverse wa...

    Text Solution

    |

  13. The speed of sound in a liquid is 1500 ms^(-1).The density of the liqu...

    Text Solution

    |

  14. The longitudinal waves starting from a ship return from the bottom of...

    Text Solution

    |

  15. At 10^5 Nm^(-2) atmospheric pressure the density of air is 1.29 kg m^(...

    Text Solution

    |

  16. At normal temperature and pressur, 4g of He occupies a volume of 22.4 ...

    Text Solution

    |

  17. Find the temperature at which the velocity of sound in air will be 1 1...

    Text Solution

    |

  18. The velocity of sound in air is 332 ms^(-1) at 0^@ C .At what temperat...

    Text Solution

    |

  19. The ratio of the velocity of sound in Hydrogen gas (gamma=7/5) to that...

    Text Solution

    |

  20. An observer sets his watch by the sound of a signal fired from a tower...

    Text Solution

    |

  21. A sound wave propagating in air has a frequency of 4000Hz. Calculate t...

    Text Solution

    |