`19` divisions on the main scale of a vernier callipers coincide with `20` divisions on the vernier scale. If each division on the main scale is of `1 cm`, determine the least count of instrument.

19 divisions on the main scale of a vernier calipers coincide with 20 divisions on the vernier scale. If each division on the main scale is of 1 cm , determine the least count of instrument.

N divisions on the main scale of a vernier callipers coincide with (N + 1) divisions on the vernier scale. If each division on the main scale is 'a' units, then the least count of the instrument is

N divisions on the main scale of a vernier callipers coincide with (N + 1) divisions on the vernier scale. If each division on the main scale is 'a' units, then the least count of the instrument is

N divisions on the main scale of a vernier calliper coincide with (N + 1) divisions of the vernier scale.If each division ofmain scale is 'a’ units, then the least count of the instrument is

N divisions on the main scale of a vernier calipers coincide with (N +1) division of the vernier scale. If each division of main scale is a units, then the least count of the calipers is :

In vernier callipers, m divisions of main scale with (m + 1) divisions of vernier scale. If each division of main scale is d units, the least count of the instrument is

In vernier callipers, m divisions of main scale with (m + 1) divisions of vernier scale. If each division of main scale is d units, the least count of the instrument is