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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: - The root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
- If critical angle for a material to air passage is 30°, the refractive index
- The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio
- A cell of emf E and internal resistance r supplies current for the same time
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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 root mean square speed of oxygen molecule (O₂) at a certain temperature is v.
- If critical angle for a material to air passage is 30°, the refractive index
- The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio
- A cell of emf E and internal resistance r supplies current for the same time
- In circular coil, when number of turns is doubled and resistance becomes 1/4th
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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