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A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is:

1. 0.25 mm
2. 0.5 mm
3. 1.0 mm
4. 0.01 mm

Correct answer: 0.5 mm

Solution

The pitch of a screw gauge is the distance moved by the screw in one complete rotation. Since the least count is given as 0.01 mm and there are 50 divisions on the circular scale, the pitch is calculated as 0.01 mm × 50 = 0.5 mm.

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