Question Detail

PHY 101 Physical Quantities, Units, and Dimensions Objective Question

Question

On a vernier caliper, the main scale has divisions of 1 mm and the vernier scale has 10 divisions. What is the least count of the caliper?
Options
A 1 mm
B 0.1 mm
Correct Answer
C 0.01 mm
D 0.5 mm
Correct Answer

Option B is the correct answer.

Detailed Explanation

The least count (LC) of a vernier caliper is calculated as the value of the smallest division on the main scale divided by the number of divisions on the vernier scale. Here, LC = (1 mm) / 10 = 0.1 mm, or 0.01 cm.

Hint

The least count represents the precision added by the vernier scale.

Question Info