First slide
Measurement
Question

The smallest division on main scale of a vernier callipers is 1 mm and 10 vernier divisions coincide with 9 main scale divisions. While measuring the length of a line, the zero mark of the vernier scale lies between 10.2 cm and 10.3 cm and the third division of vernier scale coincides with a main scale division. Find the length of the line.

Moderate
Solution

L=N+n(LC)=(10.2+3×0.01)cm

=10.23 cm

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