2026 Units and MeasurementsVernier callipers and least count Easy Question 2 of 53 in Units and Measurements

In a vernier callipers, 20 VSD coincide with 16 MSD (each division of length 1 mm). The least count of the vernier callipers is:

A 0.01 cm
B 0.1 cm
C 0.02 cm
D 0.2 cm

The answer is C.

Solution

20 VSD = 16 MSD 1 VSD $= \frac{16}{20} \times 1$ mm $= 0.8$ mm LC = 1 MSD $-$ 1 VSD $= 1 - 0.8 = 0.2$ mm = 0.02 cm

Units and Measurements in past papers

53 questions from this chapter have appeared across 25 exam years.