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A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole It:
Options
(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
Correct Answer:
will stay in any position
Explanation:
Since magnetic field is in vertical direction and needle is free to rotate 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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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The angle between the vectors (i+j) and (j+k) is
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- Ice is wrapped in black and white cloth. In which cases more ice will melt
- Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
- A 120 m long train is moving in a direction with speed 20 m/s.A train B moving
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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