The pitch of a screw gauge is 1 mm and there are 100 divisions on the circular scale…
Physics · NEET · NTA Exams — Physics and Measurement
The pitch of a screw gauge is 1 mm and there are 100 divisions on the circular scale. While measuring the diameter of a wire, the linear scale reads 1 mm and 47th divisions on the circular scale coincides with reference line of the main scale. Length of the wire is 5.6 cm as measured by a meter scale.
The curved surface area (in cm2) of the wire to correct significant figure is
- 2.5848 cm2
- 2.6 cm2
- 5.21 cm2
- 2.8 cm2
Answer
(B) 2.6 cm 2
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