Physics Question from JEE Main 2023 · 10 April, Shift 2

In an experiment with vernier calipers of least count $0.1 \, \text{mm}$, when two jaws are joined together the zero of the 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 the vernier scale lies in between $3 \, \text{cm}$ and $3.3 \, \text{cm}$ marks, and **$4$**th division of vernier scale coincides with the main scale division. The diameter of the bob is measured as: