Home
Class 12
PHYSICS
A "bar" magnet is at right angles to a u...

A "bar" magnet is at right angles to a uniform magnetic field. The couple acting on the magnet is to be one fourth by rotating it from the position. The angle of rotation is

A

`60^(@)`

B

`45^(@)`

C

`30^(@)`

D

`75^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 26

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 28

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A bar magnet is held at right angle to a uniform magneitc field. The couple acting on the acting on the magnet is to be halved by rotating it form this position. The angle of rotation is

A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is

A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is (A) 30^(@) A bar magnet is held perpendicular to

A bar magnet is placed inside a uniform magnetic field, What does in experience?

When a bar magnet is placed in a non-uniform magnetic field, it performs

Bar magnet as an equivalent solenoid |The dipole in a uniform magnetic field

A magnet is parallel to a uniform magnetic field. The work done in rotating the magnetic through 60^(@) is 8xx10^(-5) J . The work done in rotating through another 30^(@) is

A straight wire of 1.4 m long carries a current of 7 A at right angles to a uniform magnetic field of 0.01 T. Calculate the mechanical force acting on the wire due to the magnetic field.

NTA MOCK TESTS-NTA NEET SET 27-PHYSICS
  1. A "bar" magnet is at right angles to a uniform magnetic field. The cou...

    Text Solution

    |

  2. A battery of internal resistance 4 Omega is connected to the network o...

    Text Solution

    |

  3. The transition from the state n = 4 to n = 3 in a hydrogen-like atom r...

    Text Solution

    |

  4. Find the resonant frequency of a series circuit consist of an inductan...

    Text Solution

    |

  5. A coil of inductance 0.2 H and 1.0 ohm resistance is connected to a 90...

    Text Solution

    |

  6. Two identical capacitors, have the same capacitance C. One of them is ...

    Text Solution

    |

  7. On moving a charge of 20 coulomb by 2 cm, 2J of work is done , the...

    Text Solution

    |

  8. A horizontal overheadpowerline is at height of 4 m from the ground and...

    Text Solution

    |

  9. A magnetic needle is kept in a non uniform magnetic field . It experie...

    Text Solution

    |

  10. Two identical conducting rods are first connected independently to two...

    Text Solution

    |

  11. Which statement is incorrect

    Text Solution

    |

  12. An ideal gas heat engine operates in a Carnot's cycle between 227^(@)C...

    Text Solution

    |

  13. If C(P and C(v) denote the specific heats nitrogen per unite mass at c...

    Text Solution

    |

  14. At what temperature rms speed of air molecules is doubled of that at N...

    Text Solution

    |

  15. During adiabatic change, specific heat is

    Text Solution

    |

  16. A police car with a siren of frequency 8 KHz is moving with uniform ve...

    Text Solution

    |

  17. A body moving in a straight line with constant acceleration covers dis...

    Text Solution

    |

  18. At a particular instant, a stationary observer on the ground sees a pa...

    Text Solution

    |

  19. A block of mass m is placed on a rough horizontal floor and it is pull...

    Text Solution

    |

  20. Three charges are placed at the vertex of an equilateral triangle as s...

    Text Solution

    |