Teaching HTET PGT Level 3 - 2024 Mock Test Physics Units, Dimensions and Measurements Accuracy, precision of instruments and errors in measurement
While measuring the length of the rod by vernier calipers, the reading on the main scale is 6.4 cm and the eight divisions on the vernier is in line with the marking on the main scale division. If the least count of calipers is 0.01 cm and zero error - 0.04 cm, the length of the rod is
1
6.52 cm
2
6.48 cm
3
6.44 cm
4
6.4 cm