Q108 / 180 · AIIMS 2015 · Physics
Assertion : When a magnetic dipole is placed in a non uniform magnetic field, only a torque acts on the dipole.
Reason : Force would act on dipole if magnetic field is uniform.
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIfboth assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- Correct answerDIf both assertion and reason are false.
Solution
In a non-uniform magnetic field, a torque and a net force both act on the dipole. If magnetic field is uniform, net force on dipole would be zero.
Hence, the correct answer is option: 'D'.