Q. The susceptibility of a paramagnetic material is $K$ at 27$℃$. At what temperature will its susceptibility be $K/2$?
A) $600℃$
B) 287$℃$
C) 54$℃$
D) 327$℃$
Explanation
(d) For a para-magnetic material, $K \propto \frac{1}{T}$
$\therefore\frac{K_{2}}{K_{1}} = \frac{T_{1}}{T_{2}}$
$\frac{K/2}{K} = \frac{27 + 273}{T_{2}}$
$T_{2} = 600K = 600 - 273 = 327℃$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.