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In a permanent magnet at room temperatur...

In a permanent magnet at room temperature

A

magnetic moment of each molecule is zero.

B

the individual molecules have non-zero magnetic moment which are all perfectly aligned.

C

domains are partially aligned.

D

domains are all perfectly aligned.

Text Solution

Verified by Experts

The correct Answer is:
D
At room temperature permanent magnet behaves as a ferromagnetic substance for a long period of time and in ferromagnetic substance domains are all perfectly aligned.
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