Q. If a magnet of pole strength $m$ is divided into four parts such that the length and width of each part is half that of initial one, then the pole strength of each part will be
A) $m/4$
B) $m/2$
C) $m/8$
D) $4m$
Explanation
(b) For each part $m^{'} = \frac{m}{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.