Question

Vernier scale of Vernier calipers has 50 divisions which coincide with 49 main scale divisions. Find the Vernier constant. Given: there are 20 main scale divisions cm^–1.

• A. 100 µm
• B. 1000 µm
• C. 10 µm
• D. None of these

Answer 1

Answer: (C)

10 µm

Answer 2

VC = $\frac { 1 } { 50 }$ × (value of 1 MSD)

= $\frac { 1 } { 50 }$ × $\frac { 1 } { 20 }$ = 0.001 cm