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If a bar magnet of magnetic moment M is ...

If a bar magnet of magnetic moment M is kept in a uniform magnetic field B, its time period of oscillation is T. The another magnet of same length and breath is kept in a same magnetic field. If magnetic moment of new magnet is `M//4`, then its oscillation time period is

A

T

B

2T

C

`T//2`

D

`T//4`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • If a bar magnet of magnetic moment 'm' is freely suspended in a uniform magnetic field B, the work done in rotating the magnet through an angle thete is

    A
    `mB(1- sin theta)`
    B
    `mB sin theta`
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    `mB cos B`
    D
    `mB(1-costheta)`
  • If a bar magnet of magnetic moment M is freely suspended in a uniform magnetic field of strength B , the work done in rotating the magnet through an "angle"theta is

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    `MB(1-sintheta)`
    B
    `MBsintheta`
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    `MBcostheta`
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  • A bar magnet of magnetic moment M is placed in a uniform magnetic field B in such a manner that is angle between M and B. Select the correct option(s)

    A
    Minimum potential energy is -MB
    B
    Maximum potential energy is MB
    C
    Bar magnet is in stable equilibrium when `theta = 0^@`
    D
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