Q142 / 200 · NEET 2021 · Physics

A screw gauge gives the following readings when used to measure the diameter of a wire
Main scale reading : 0 mm
Circular scale reading : 52 divisions
Given that 1 mm on main scale corresponds to 100 divisions on the circular scale. The diameter of the wire from the above data is:

  • A
    0.52 cm
  • B
    0.026 cm
  • C
    0.26 cm
  • Correct answer
    D
    0.052 cm

Solution

L.C.=1100mm

=0.01 mm

Now,

Diameter of wire =52×0.01

=0.52 mm

=0.052 cm

Hence, the correct answer is option: 'D'.

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