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Question

Needles N1, N2 and N3 are made up of ferromagnetic, paramagnetic and diamagnetic material, respectively. A magnet, when brought close to them, will :

(I). Attract N1 strongly, attract N2 weakly and repel N3.

(II). Attract N1 more strongly than N2.

(III). Attract N1 and N2 strongly but repel N3.

(IV). Attract all of them.

A
I,II
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B
II,III
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C
I,III
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D
IV
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Solution

The correct option is A I,II
N1 Ferromagnetic material It will be strongly attracted by the magnet.

N2 Paramagnetic material It will be weakly attracted by the magnet.

N3 Diamagnetic material It will be repelled by the magnet.

Therefore, statements I and II are correct.

Hence, option (A) is the correct answer.

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