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A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5mm. What is its least count.

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A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5mm. What is its least count.

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screw gauge's pitch = 0.5 mm

No. of divisions on circular scale = 50

Least count = ?

Least count = pitc of screw gauge

                            No. of divisions on circular scale

= 0.5mm = 0.01 mm = 0.001 cm

 50

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