Physics
General
Easy

Question

pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47t  division on the circular scale coincide with the reference line. The lengthof the wire  155.6 cm. What will be the curved surface area (in cm2 of the wire in appropriate number of significant figures.

  1. 2.6 cm2
  2. 2.5848 cm2
  3. 2.585 cm2
  4. 2.5 cm2

The correct answer is: 2.6 cm2

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