While measuring the length of a copper rod using a vernier calliper, the zero of the vernier scale ws found to be between 4.6 cm and 4.7 cm on the main scale. The 6th division of the vernier scale is found to coincide with a division on the main scale. Find the length of the rod if the least count is 0.01 cm.

Explanation

M.S.R = 4.6 cm = 4.6 mm
V.C.D = 6
L.C = 0.01 cm = 0.1
I = M.S.R + `(V.C.D xx L.C)
=` 46 + 6 xx 0.1 = 46.6mm = 4.66` cm.