Home
Class 12
PHYSICS
A whistle is whirled in a circle of radi...

A whistle is whirled in a circle of radius one metre and traverses the sircular path twice per second. An observer is situated outside the circle but in its plane. If the velocity of sound is 332 m/s, then the interval between the highest and the lowest observed pitch is :

A

`332:1`

B

`332:4pi`

C

`2:1`

D

`1.08:1`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • UNIT TEST PAPER NO.2

    MODERN PUBLICATION|Exercise MCQ|25 Videos

  • UNITS, MEASURMENTS, DIMENSIONS, ERRORS OF MEASUREMENTS

    MODERN PUBLICATION|Exercise Recent Competitive Questions|7 Videos

Similar Questions

Explore conceptually related problems

A 14.5 kg mass, fastened to the end of a steel wire of unstretched 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev/s at the bottom of the circle. The cross- sectional area of the wire is 0.065" cm"^(2) . Calculate the elongation of the wire when the mass is at the lowest point of its path.

MODERN PUBLICATION-UNIT TEST PAPER NO.4-MCQ
  1. When an ideal diatomic gas is heated t constant pressure, the fraction...

    Text Solution

    |

  2. 70 calories of heat are required to raise the temperature of 2 moles o...

    Text Solution

    |

  3. A whistle is whirled in a circle of radius one metre and traverses the...

    Text Solution

    |

  4. A star is moving away from the earth with a velocity of 100 km/s If th...

    Text Solution

    |

  5. If one mole of a monoatomic gas (gamma=(5)/(3)) is mixed with one mole...

    Text Solution

    |

  6. An increase in intensity level of one decibel implies an increase in i...

    Text Solution

    |

  7. One mole of an ideal gas requires 207 J heat to raise the temperature ...

    Text Solution

    |

  8. The difference between the apparent frequency of a source of sound as ...

    Text Solution

    |

  9. An electric refrigerator abstracts 2000 calories from ice trays. The c...

    Text Solution

    |

  10. A car travelling at 10" ms"^(-1) sounds a horn, which has a frequency ...

    Text Solution

    |

  11. Two samples A and B of a gas are initially at the same temperature and...

    Text Solution

    |

  12. At 16^(@)C two open organ pipes when wounded together produce 51 beats...

    Text Solution

    |

  13. If the temperature of a black body is increased by 50% then the amount...

    Text Solution

    |

  14. Beats are produced by two waves y(1)=asin2000pit, and y^(2)=asin2008pi...

    Text Solution

    |

  15. A body cools from 60^(@)C to 50^(@)C in 10 minutes, when kept in air a...

    Text Solution

    |

  16. The temperature of hot and cold end of a 20 cm long rod in steady stat...

    Text Solution

    |

  17. Four indentical rods of same material are joined end to end to from a ...

    Text Solution

    |

  18. A uniform rope of length 12 metres and mass 6 kg hangs vertically from...

    Text Solution

    |

  19. A sphere of radius r, density d and specific heat S is heated to tempe...

    Text Solution

    |

  20. The correct curve showing maximum emissive power E(m) and absolute tem...

    Text Solution

    |