10 divisions on the main scale of a Vernier calliper coincide with 11 divisions on the Vernier scale. If each division on the main scale is of 5 units, the least count of the instrument is:\\
(1) $\frac { 1 } { 2 }$\\
(2) $\frac { 10 } { 11 }$\\
(3) $\frac { 50 } { 11 }$\\
(4) $\frac { 5 } { 11 }$