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A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equillibrium state. The energy required to rotate it by 60⁰ is W. Now the torque required to keep the magnet in this new position is
Options
(a) W/√3
(b) √3W
(c) √3W/2
(d) 2W/√3
Correct Answer:
√3W
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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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
- Two charges of equal magnitude q are placed in air at a distance 2a
- A boat taken 2h to travel 8km and back in still water.If the velocity of water 4 km/h
- A particle with charge q is moving along a circle of radius R with unoform speed v.
- A solid cylinder of mass M and radius R rolls without slipping down and inclined plane
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
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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