Question

The vernier constant of a vernier callipers is `0.001 cm`. If `49` main scale divisions coincide with `50` vernier scale devisions, then the value of `1` main scale divisions is .
A. 0.1 mm
B. 0.5 mm
C. 0.4 mm
D. 1 mm

Answer 1

Correct Answer - B
`50 VSD = 49 MSD`
`1 VSD = (49)/(50) MSD`
`:. VC = 1 MSD - 1VSD`
`:. VC = 1 MSD - (49)/(50) MSD`
`:. VC = 1/(50) MSD`
`:. 1 MSD = 50(VC)`
=`50 (0.001 cm)`
`:. 1 MSD = 0.5 mm`.