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. Determine the least count of the callipers.

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0.01 cm

0.1 cm

0.001 cm

1 cm

answer is A.

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Detailed Solution

Least Count (LC)= Smallest division on main scale Number of divisions on vernier scale =110 mm=0.1 mm=0.01 cm

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