Q. A bar magnet having centre O has a length of $4\ cm$. Point $P_{1}$ is in the broad side-on and $P_{2}$ is in the end side-on position with $OP_{1} = OP_{2} = 10\ metres$. The ratio of magnetic intensities $H$ at $P_{1}$ and $P_{2}$ is
A) $H_{1}:H_{2} = 16\ :100$
B) $H_{1}:H_{2} = 1\ :2$
C) $H_{1}:H_{2} = 2\ :1$
D) $H_{1}:H_{2} = 100\ :16$
Explanation
(b) Magnetic intensity on end side-on position is twice than broad side on position
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.