JEE MAIN - Physics (2005 - No. 11)
A magnetic needle is kept in a non-uniform magnetic field. It experiences :
neither a force nor a torque
a torque but not a force
a force but not a torque
a force and a torque
ব্যাখ্যা
A magnetic needle kept in non uniform magnetic field experience a force and torque due to unequal forces acting on poles.