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A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will be
Options
(a) F/MB
(b) MB/F
(c) BF/M
(d) MF/B
Correct Answer:
MB/F
Explanation:
FL = MB (= Torque)
L = MB/F
Related Questions: - The angle of incidence for a ray of light at a refracting surface of a prism is 45⁰.
- A body of mass 120 kg and density 600 kg/m³ floats in water.
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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 of incidence for a ray of light at a refracting surface of a prism is 45⁰.
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- The velocity of image when object and mirror both are moving towards each other
- A step down transformer is used on a 1000 V line to deliver 20 A at 120 V
- Light of two different frequencies whose photons have energies 1eV
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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