The susceptibility of magnesium at `200K` is `1.8 xx 10^(-5)`. At what temperature will the susceptibility decreasey `6 xx 10^(6)` ?

Explanation

Given : `T_(1) = 200K, chi_(1) = 1.8 xx 10^(-5)`
`chi_(1) - chi_(2) = 6 xx 10^(-6) = 0.6 xx 10^(-5)`
`rArr chi_(2) = chi_(1) - 0.6 xx 10^(-5)`
`= 1.8 xx 10^(-5) - 0.6 xx 10^(-5)`
`:. chi_(2) = 1.2 xx 10^(-5)`
`:' chiT` = Constant
`:. chi_(1)T_(1) = chi_(2)T_(2)`
`rArr T_(2) = (chi_(1)T_(1))/(chi_(2))`
`:. T_(2) = ((1.8 xx 10^(-5))/(1.2 xx 10^(-5))) xx 200 K`
`:. T_(2) = 300 K`