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Plotting Non Uniform Field Lines

A compass nee...

Question

A compass needle which is allowed to move in horizontal plane is taken to a geomagnetic pole. It

A

will stay in north-south direction only

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B

will stay in east -west direction only

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C

will become rigid showing no movement

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D

will stay in any position

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Solution

The correct option is D will stay in any position
At pole's horizontal component of earth's magnetic field is zero therefore, if needle is hold horizontally then it will stay in any position.

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