Question

A Vernier calliper has 20 Venier divisions which coincide with 19 divisions on the main scale. If one main scale division is 1 mm,find the least count and Vernier constant of the calliper.

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Answer 1

Answer:

0.5 mm

1 mm

2 mm

1/41/4 mm

Answer :

C

Solution :

20 VSD = 19 MSD ⇒⇒ 1 VSD = 19201920 MSD

L.C = 1MSD - 1 VSD = 1MSD - 19201920 MSD

L.C = 120120 MSD

⇒0.1=120⇒0.1=120 MSD ⇒⇒ MSD = 2mm.