Q. 1

Screw Gauge is an instrument used to measure the dimensions of very small objects upto _________ (0.1 cm, 0.01 cm, 0.1 mm, 0.01 mm)

Answer :

0.01 mm

Explanation:The least count of screw gauge is given by;

Where pitch is the distance moved on the linear scale of the screw gauge in one rotation.

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