SSC JE Electrical Engineering 2012 Paper

Sensitivity is defined as amount of defection per unit current
$\mathit{S}=\frac{\mathit{D}}{1}$
${\mathit{S}}_{\mathit{x}}=\frac{1}{40}$ MA = $\frac{1000}{40}$ = 25Ω/V
${\mathit{S}}_{\mathit{y}}=\frac{1}{50}$ MA = $\frac{1000}{50}$ = 20Ω/V
Hence from the above solution, it is clear the sensitivity of x is more then the sensivity of y.