JEE · NEET Previous Year Question

A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It

Topic: NEET PYQ

Answer: B. Full step-by-step solution below.

  1. Awill become rigid showing no movement
  2. Bwill stay in any position
  3. Cwill stay in north‐south direction only
  4. Dwill stay in east‐west direction only

Correct answer: B

Solution

(b) A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It will stay in any position as the horizontal component of earth’s magnetic field becomes zero at the geomagnetic pole.

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