The pitch of a screw gauge is 0.5 mm and there are 50 divisions on the circular scale. In measuring the thickness of a metal plate, there are five divisions on the pitch scale (or main scale) and 34 division coincides with the reference line. Calculate the thickness of the metal plate.

2.5 mm

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0.34 mm

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2.84 mm

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1.84 mm

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Solution

The correct option is C
2.84 mm

Main Scale reading : $5 \times 0.5 = 2.5 m m$

Least count : 0.01 mm

Thickness: 2.5 + 34 + 0.01 = 2.84 mm

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The pitch of a screw gauge is 0.5 mm and there are 50 divisions on the circular scale. In measuring the thickness of a metal plate, there are five divisions on the pitch scale (or main scale) and 34 division coincides with the reference line. Calculate the thickness of the metal plate.

The correct option is C 2.84 mm Main Scale reading : 5×0.5=2.5 mm Least count : 0.01 mm Thickness: 2.5 + 34 + 0.01 = 2.84 mm

The correct option is C
2.84 mm

Main Scale reading : $5 \times 0.5 = 2.5 m m$

Least count : 0.01 mm

Thickness: 2.5 + 34 + 0.01 = 2.84 mm