Question

The main scale of a vernier callipers reads 10 mm in 10 divisions. Ten divisions of vernier scale coincide with nine divisions of the main scale. When the two jaws of the callipers touch each other, the fifth division of the vernier coincides with 9 main scale divisions and zero of the vernier is to the right of zero of main scale, when a cylinder is tighty placed between the two jaws, the zero of the vernier scale lies slighty to the left of 3.2 cm and the fourth vernier division coincides with a main scale division. Find diameter of the cylinder.

Answer 1

Hence the diameter of the cylinder is 3.09 cm

Explanation:

Given data:

• Reading of vernier calipers = 10 mm
• Number of divisions on vernier calipers = 10
• Zero of vernier scale lies at = 3.2 cm

Zero error = 0.5 mm = 0.5 m

Diseved reading of cylinder

3 der = 3.1 cm+(4)(0.01 cm)

=3.14 cm

Actual thickness of cylinder = (3.14) − (0.06) = 3.09 cm

Hence the diameter of the cylinder is 3.09 cm

Answer 2

Answer:

3.09 is right answer.........