Question

The susceptibility of a paramagnetic material is $K$ at ${27}^{2}C$ .At what temperature will its susceptibility be $\frac{K}{2}$ ?

• A. ${600}^{0}C$
• B. ${287}^{0}C$
• C. ${54}^{0}C$
• D. ${327}^{0}C$

Answer 1

The correct option is D ${327}^{0}C$

For a paramagnetic material , $K\alpha \frac{1}{T}$
$\therefore \frac{K_2}{K_1}=\frac{T_1}{T_2}$
$\frac{K/2}{K}=\frac{27+273}{T_2}$
$T_2=300\times 2=600K$
$600-273={327}^{0}C$