1.

A bar magnet of length l, pole strength 'p' and magnetic moment overset(to)(m) is split (l)/(2) · to two equal pieces each of length. The magnetic moment and pole strength of each piece is respectively ....... and ....... .

Answer»

`OVERSET(to)(m), (p)/(2)`
`(overset(to)(m) )/( 2), p`
`(overset(to)(m) )/(2) , (p)/(2)`
`overset(to)(m) , p`

Solution :When a bar magnet of LENGTH L is broken into two parts each of length `(l)/(2)`, each part (fragment) of the magnet BEHAVES as an independent magnet. So the pole strength p does not CHANGE but its magnetic dipole moment becomes halved.


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