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A compose needle which is allowed to mov...

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

A

will oscillate

B

will be aligned to north-south direction.

C

will be aligned to east-west direction

D

will be aligned to random direction

Text Solution

Verified by Experts

The correct Answer is:
D
Magnetic field on geomagnetic poles is vertical and hence will be applied perpendicular to plane of rotation of compass needle. Magnetic field will not be able to apply torque on needle to rotate it in horizontal plane. Hence magnetic needle will stay in random orientation.
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Knowledge Check

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

    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

  • A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole it

    A
    Will stay in north-south direction only
    B
    Will stay in east-west direction only
    C
    Will become rigid showing no movement
    D
    Will stay in any position

  • STATEMENT-1 : A compass needle which is allowed to move in horizontal plane is taken to a geomagnetic pole . It will stay in any position . and STATEMENT-2 : Angle of dip at poles is 90^(@)

    A
    Statement-1 is True , Statement-2 is True , Statement-2 is a correct explanation for Statement-1
    B
    Statement-1 is True , Statement-2 is True , Statement-2 is NOT a correct explanation for Statement- 1
    C
    Statement-1 is True , Statement-2 is False
    D
    Statement-1 is False , Statement-2 is True

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