Assertion: When a magnetic dipole is placed in a non uniform magnetic field, only a torque acts on the dipole.
Reason: Force would also acts on dipole if magnetic field were uniform.

Options

A. both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. both Assertion and Reason are false.

Answer

D

Explanation

In a non uniform magnetic field, both a torque and a net force act on the dipole.
If magnetic field were uniform, net force on dipole would be zero.