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When Asha suspended four bars of differe...

When Asha suspended four bars of different materials from a pole and brought the North pole of a bar magnet near part P and Q of each bar one by one as shown in figure, then observations she recorded are as follows:

Which of the following sets correctly represents metal bars I, II, III and IV?

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The correct Answer is:
A
Copper is a non-magnetic material and iron bar is a magnetic material.
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