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A thin bar magnet of length 2 l and brea...

A thin bar magnet of length 2 l and breadth 2 b pole strength m and magnetic moment M is divided into four equal parts with length and breadth of each part being half of original magnet.
Then, the magnetic moment of each part is

A

`M//4`

B

M

C

`M//2`

D

2 M

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Knowledge Check

  • If a magnet of pole strenth m is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will be

    A
    `m//4`
    B
    `m//2`
    C
    `m//8`
    D
    `4m`

  • A bar magnet of magnetic moment M is cut into equal length. The magnetic moment of each part be:

    A
    M
    B
    2M
    C
    Zero
    D
    0.5 M

  • A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will be

    A
    `M`
    B
    `M//2`
    C
    `M//4`
    D
    `2M`

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    When a bar magnet of pole strength 'm' and magnetic moment 'M' is cut into n equal parts longitudinaly and transversely then pole strength and magnetic moment of each piece is respectively

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