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The time period of bar magnet is doubled when magnetic field is reduced by same amount. If initial magnetic field is 0.4 x 10⁻⁴ T then find out decrease in the magnetic field
Options
(a) 0.12 x 10⁻⁵
(b) 0.3 x 10⁻⁴
(c) 0.4 x 10⁻⁵
(d) 12 x 10⁻⁵
Correct Answer:
0.3 x 10⁻⁴
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
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N
- The capacitance of two concentric spherical shells of radii R₁ and R₂ (R₂>R₁) is
- A person can see clearly objects only when they lie between 50 cm and 400 cm from
- A beam of electron passes undeflected through mutually perpendicular
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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