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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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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- White light reflected from a soap film (Refractive Index =1.5) has a maxima
- The numebr 0 (zero) is required for
- A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
- The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
- Two radioactive materials X₁ and X₂ have decay constants 5λ and λ respectively
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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