The susceptibility of magnesium at `300 K` is `1.2 xx 10^(-5)`. At what temperature will the susceptibility increase to `1.8 xx 10^(-5)`?

Options

A. `450K`
B. `200K`
C. `375K`
D. None of these

Answer

B

Explanation

`chi prop 1/T`
`:. Chi_(1)T_(1)=chi_(2)T_(2)`
Hence `T_(2)=(1.2xx10^(-5)xx300)/(1.8xx10^(-5))=200K`