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The geometric length of a bar magnet is ...

The geometric length of a bar magnet is `24cm`. The length of the magnet is

A

24 cm

B

28.8 cm

C

20 cm

D

30 cm

Text Solution

Verified by Experts

The correct Answer is:
C
`2l=5/6`[geometric length]
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Magnetic length of a bar magnet is

The northk and south poles of a bar magnet are situated 0.4 cm inside from the geometric ends of the magnet. If the geometric length of the magnet is 6 cm, then its effective length is ________ mm.

Knowledge Check

  • The north and south poles of a bar magnet are situated 0.4 cm inside from the geometric ends of the magnet. If the geometric length of the magnet is 6 cm, then its effective length is _____ mm.

    A
    48
    B
    52
    C
    56
    D
    54

  • What is the geomwtric length of a bar magnet having pole strength 60 Am and magnetic moment 6 Am^(2) ?

    A
    20 cm
    B
    8 cm
    C
    12 cm
    D
    0.1 m

  • The effective length of a bar magnet is equal to _____

    A
    the distance between its poles
    B
    the distance between any one pole and its centre
    C
    the distance between its geometric ends
    D
    the distance between any one geometic end and its centre

    • Similar Questions

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    What is magnetic length of a magnet?

    The magnetic moment of a bar magnet is 2A m2. if the magnetic length of the bar magnet is 5 cm, determine the force acting on it an external magnetic field of strength 0.6 T.

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    The relation between geometric length and magnetic length of a bar magnet is given by Magnetic length =(5)/(6)xx Geometric length. If the difference between geometric length and magnetic length of a bar magnet is 'K' units, then find its geometric length and magnetic length.

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