Question

Q.4 of 75
Mark for review
A magnetic needle is kept in a non-uniform
magnetic field. It experiences
a torque but not a force.
neither a force nor a torque.
force and a torque
a force but not a torque​

Answer 1

QuesTion :-

A magnetic needle is kept in a non uniform magnetic field . It experiences

SoluTion :-

$\sf {The\ force\ on\ North \ Pole =m \overrightarrow{B}_{1}}\\\\\\\sf {The\ force\ on\ South \ Pole =m \overrightarrow{B}_{2}}$

∵ The forces will be unequal and are not having same line of action,

∴ The magnetic needle experiences a force as well as a torque.

Correct Choice :-

C. a force and a torque