Question

The following information is given in respect of a vernier calipers.
1 main scale division = 0.3 cm
30 V.S.D. = 29 M.S.D.
The least count of this vernier calipers is ______________.
A. 0.01 mm
B. 0.1 cm
C. 0.03 cm
D. 0.1 mm

Answer 1

Correct Answer - D
1 MSD = 0.3 cm
Since, 30 VSD = 29 MSD
(i.e., N VSD = (N-1) MSD)
Least count
= `(1MSD)/(30)=(0.3 cm)/(30)` = 0.01 cm = 0.1 mm