Home
Class 12
PHYSICS
The perio of oscillation of a magnet in ...

The perio of oscillation of a magnet in vibration magnetometer is 2 sec. The period of oscillation of a magnet whosr magnetic moment is four times that of the first magnet is

A

1 sec

B

5 sec

C

8 sec

D

0.5 sec

Text Solution

Verified by Experts

The correct Answer is:
a
(a) `T=2pisqrt(((I)/(MB_(H)))`
`T.=2pisqrt(((I)/(4MB_(H))))=(1)/(2)[2pisqrt((I)/((MB_(H))))]=(1)/(2)xx2=1` second.
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM AND MATTER

    DISHA PUBLICATION|Exercise EXERCISE-2:CONCEPT APPLICATOR|31 Videos

  • MAGNETISM AND MATTER

    DISHA PUBLICATION|Exercise EXERCISE-2:CONCEPT APPLICATOR|31 Videos

  • LAWS OF MOTION

    DISHA PUBLICATION|Exercise Exercise-2 : Concept Applicator|30 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    DISHA PUBLICATION|Exercise EXERCISE-2 CONCEPT APPLICATOR|24 Videos

Similar Questions

Explore conceptually related problems

Time period of oscillation of a magnetic needle is

The time period of oscillation of a magnet in a vibration magnetometer is 1.5 seconds. The time period of oscillation of another of another magnet similar in size, shap and mass but having one-fourth magnetic moment than that of first magnet, oscillating at same place will be

The factors on which the period of oscillation of a "bar" magnet in uniform magnetic field depend

The magnet of vibration magnetometer is heated so as to reduce its magnetic moment by 36%. By doing this the periodic time of the magnetometer will

The frequency of oscillation of the magnet in an oscillation magnetometer in the earth's magnetic field is 40 oscillations per minute. A short bar magnet is placed to the north of the magnetometer, at a separation of 20cm from the oscillating magnet, with its north pole pointing towards north (figure). The frequency of oscillation is found to increase to 60 oscillations per minute. Calculate the magnetic moment of this short bar magnet. Horizonatl component of the earth's magnetic field is 24 muT .

The period of oscillation of a vibration magnetometer depends on which of the following factors? where I is the moment of inertia of the magnet about the axis of suspension, M is the magnetic moment of the magnet and H is the external magnetic field

The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by 19% . By doing this the period time of the magnetometer will

DISHA PUBLICATION-MAGNETISM AND MATTER-EXERCISE-1:CONCEPT BUILDER (TOPICWISE)
  1. Nickel shows ferromagnetic property at room temperature. If the temper...

    Text Solution

    |

  2. If a diamagnetic substance is brought near north or south pole of a ba...

    Text Solution

    |

  3. A paramagnetic material is placed in a magnetic field. Consider the fo...

    Text Solution

    |

  4. When a ferromagnetic material is heated to temperature above its Curie...

    Text Solution

    |

  5. The magnetic moment of a magnet (15cmxx2cmxx1cm) is 1.2A-m^(2). Calcul...

    Text Solution

    |

  6. Needles N(1) , N(2), and N(3) are made of a ferromagnetic, a paramagne...

    Text Solution

    |

  7. Three identical bars A, B and C are made of different magnetic materia...

    Text Solution

    |

  8. Relative permitivity and permeability of a material epsilon(r) and mu(...

    Text Solution

    |

  9. IF the current is doubled, the deflection is also doubled in

    Text Solution

    |

  10. To measure the magnetic moment of a bar magnet, one may use

    Text Solution

    |

  11. A bar magnet of moment of inertia 9xx10^(-5) kgm^(2) placed in a vibra...

    Text Solution

    |

  12. If the period of oscillaion of freely suspended bar magnet in earth's...

    Text Solution

    |

  13. A thin rectangular magnet suspnded freely has a period of oscillation ...

    Text Solution

    |

  14. The time period of oscillation of a freely suspended bar magnet with u...

    Text Solution

    |

  15. Two tangent galvanometers having coils of the same radius are connecte...

    Text Solution

    |

  16. The perio of oscillation of a magnet in vibration magnetometer is 2 se...

    Text Solution

    |

  17. Two magnets of magnetic moments M and 2M are placed in a vibration mag...

    Text Solution

    |

  18. Two tangent galvanometers A and B have coils of radii 8cm and 16cm res...

    Text Solution

    |

  19. The magnetic needle of a tangent galvanometer is deflected at an angle...

    Text Solution

    |

  20. If theta1 and theta2 are two solutions of the equation a cos 2theta + ...

    Text Solution

    |