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Q.

Circular scale of a screw gauge has 50 divisions and pitch of the screw is 0.5 mm. Then least count of the instrument is 

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a

0.5 mm

b

0.01 mm

c

0.1 mm

d

0.05 mm

answer is A.

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Detailed Solution

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Least count =0.550mm=0.01mm

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