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Standard IX

Physics

Screw Gauge

The pitch of ...

Question

The pitch of a screw gauge is $1$ mm and its circular scale has $100$ divisions. In measurements of the diameter of a wire, the main scale reads $2$ mm and $45$ th mark on circular scale coincides with the baseline. Find the least count ?

0.01 cm

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0.001 cm

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0.0001 cm

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0.1 cm

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Solution

The correct option is B 0.001 cm
Least count of screw gauge $= \frac{1}{100} = 0.01 m m$ or $0.001 c m$

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The pitch of a screw gauge is 1 mm and its circular scale has 100 divisions. In measurements of the diameter of a wire, the main scale reads 2 mm and 45th mark on circular scale coincides with the baseline. Find the least count ?

The correct option is B 0.001 cmLeast count of screw gauge =1100=0.01 mm or 0.001 cm

The pitch of a screw gauge is $1$ mm and its circular scale has $100$ divisions. In measurements of the diameter of a wire, the main scale reads $2$ mm and $45$ th mark on circular scale coincides with the baseline. Find the least count ?

The correct option is B 0.001 cm
Least count of screw gauge $= \frac{1}{100} = 0.01 m m$ or $0.001 c m$