1.

What will be the change in the length of each small bar magnet when a bigger bar magnet is cut into 4 equal parts parallel to the equatorial line ?

Answer»

One-fourth of the initial LENGTH
Half of the initial length
No change in its length
One- fourth of the initial length.

Solution :If the bar MAGNET is cut into FOUR equal parts perpendicular to the axial line, the length of each small magnet becomes `1//4th`of the initial length.
HENCE, the correct option is (a).


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