Question 23 of 70

In an experiment with vernier callipers of least count $0.1mm$, when two jaws are joined together the zero of vernier scale lies right to the zero of the main scale and ${6}^{th}$ division of vernier scale coincides with the main scale division. While measuring the diameter of a spherical bob, the zero of vernier scale lies in between $3.2cm$ and $3.3cm$ marks and ${4}^{th}$ division of vernier scale coincides with the main scale division. The diameter of bob is measured as