The susceptibility of magnetism at 300 K is `1.2xx10^(-5)` the temperature at which the susceptibility becomes `1.44xx10^(-5)` is

Options

A. 200 keV
B. 240 K
C. 250 K
D. 0K

Answer

C

Explanation

Curie's law `chi_(m)=(C)/(T)=(chi_(m))/(chi_(m)')=(T')/(T)`
`implies(1.2xx10^(-5))/(1.44xx10^(-5))=(T^(1))/(300)`
`impliesT_(1)=(120)/(144)xx300K=250K`