Teaching NVS PGT 2024 Test Series Physics Units, Dimensions and Measurements Accuracy, precision of instruments and errors in measurement
The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincide with (n − 1) divisions of main scale. The least count of the vernier callipers is,
1
\(\frac{1}{n^{2}}\) cm
2
\(\frac{1}{n(n+1)}\) cm
3
\(\frac{1}{(n+1)(n−1)}\) cm
4
\(\frac{1}{n}\) cm