The main scale of a vernier callipers reads 10 mm in 10 divisions. 10 divisions of Vernier scale coincide with 9 divisions of the main scale. When a cylinder is tightly placed between the two jaws, the zero of vernier scale lies slightly behind 3.2 cm and the fourth vernier division coincides with a main scale division. The diameter of the cylinder is :
Text Solution
Verified by ExpertsThe correct answer is:
B
Observed reading of cylinder diameter = 3.1 cm + (0.01 cm).
= 3.14 cm
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