A magnetic needle kept in a non- uniform magnetic field, experiences (a)Force (b)Torque (c)Force and torque (d)None

When a magnetic needle is placed in a non-uniform magnetic field it experiences....(a)A force but no torque (b)A torque but no force (c)Forced and torque (d)Neither a force nor a torque

A magnetic needle made of iron is suspended in a uniform external magnetic field. It experiences a torque and the needle starts oscillating. Write down the frequency of oscillation of the magnetic needle.

When a magnetic needle is placed in a non-uniform magnetic field it experiences. State whether the potential energy of the magnet increases or decreases after rotation. Justify your answer.

A magnetised needle in uniform magnetic field experiences a torque but no net force. An iron nail near a bar magnet, however, experiences a force of attraction in addition to a torque. Why?

A magnetic needle oscillates in a uniform magnetic field of strength B1, with a time period of 10 seconds. The same magnetic needle oscillates in another uniform magnetic field of strength B 2 with a time period 20 seconds. Which magnetic field is strong, B1, or B2,? Why?