# For a dilute solution of a strong electrolyte,the variation of molar conductivity with concentration is given by

$\begin{array}{1 1}\Lambda_m=\Lambda^{\infty}_m+bc\\\Lambda_m=\Lambda^{\infty}_m-bc\\\Lambda_m=\Lambda^{\infty}_m+b\sqrt c\\\Lambda_m=\Lambda^{\infty}_m-b\sqrt c\end{array}$

Answer : $\Lambda_m=\Lambda^{\infty}_m-b\sqrt c$
For a dilute solution,the variation of molar conductivity with concentration is given by $\Lambda_m=\Lambda^{\infty}_m-b\sqrt c$