Question

A Vernier calliper reads a main scale reading of 2.3 cm and the 5th division of the Vernier scale coincides with a main scale division. If the least count is 0.01 cm, what is the actual reading?

Options

• 2.30 cm

• 2.35 cm

• 2.05 cm

• 2.53 cm

Answer 1

2.35 cm

Explanation:

Actual Reading = MSR + (VSR × LC) = 2.3 + (5 × 0.01) = 2.3 + 0.05 = 2.35 cm. The Vernier scale reading (VSR) is the number of the Vernier division that coincides with any main scale division, multiplied by the least count.