List of top Physics Questions on Measurement of length

One main scale division (MSD) of a Vernier calliper is \(1\) mm and the Vernier scale has \(10\) divisions. When the jaws touch, the Vernier scale shifts to the left and the \(4^{th}\) Vernier division coincides with a main scale division. If the measured length is \(1\) cm, the actual length is:

In a vernier callipers, 20 VSD coincide with 16 MSD (each division of length 1 mm). The least count of the vernier callipers is: ____.

Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is: