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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.
Related Questions: - A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
- A particle falls towards earth from infinity. Its velocity on reaching the earth
- Two coherent sources of different intensities send waves which interfere.
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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 radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
- A particle falls towards earth from infinity. Its velocity on reaching the earth
- Two coherent sources of different intensities send waves which interfere.
- Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂
- The resultant of two forces, one double the other in magnitude, is 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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