Q. At a temperature of $30{^\circ}$ C, the susceptibility of a ferromagnetic material is found to be X. Its susceptibility at $333{^\circ}$ C is
A) $X$
B) $0.5\ X$
C) $2\ X$
D) $0.09\ X$
Explanation
(d) Susceptibility of ferromagnetic material is inversely proportional to temperature
$X \propto \frac{1}{T}$
$\frac{X_{1}}{X_{2}} = \frac{T_{2}}{T_{1}}$
Given , $T_{1} = 30{^\circ}\ C,\ T_{2} = 333{^\circ}C,\ \ X_{1} = X$
$\therefore\ X_{2} = \frac{T_{1}}{T_{2}}X = \frac{30}{333}X = 0.09\ X$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.