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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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- A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle
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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
- If the series limit of Lyman series for hydrogen atom is equal to the series limit
- A particle covers half of its total distance with speed v1 and the rest half distance
- A circular coil of radius 10cm and 100 turns carries a current 1 A.
- A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle
- The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
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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