Magnetism And Matter Ques 15
15. A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It :
[2012]
(a) will become rigid showing no movement
(b) will stay in any position
(c) will stay in north-south direction only
(d) will stay in east-west direction only
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Answer:
Correct Answer: 15.(b)
Solution:
- (b) Since magnetic field is in vertical direction and needle is free to totate in horizontal plane only so magnetic force cannot rotate the needle in horizontal plane so needle can stay in any position.
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