Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Units, Dimensions and Measurements
A screw gauge with zero correction gives the following reading when used to measure the diameter of a wire. Pitch scale reading = 0 mm and head scale reading = 52 divisions. Given that 1 mm on main scale corresponds to 100 divisions of the head scale. The diameter of wire from the above data is:
1
0.0052 cm
2
0.052 cm
3
0.26 cm
4
More than one of the above
5
None of the above