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NEET 2021
Exam
NEET
Year
2021
Subject
Physics
Chapter
Experimental Physics

NEET 2021 · Physics · Experimental Physics

A screw gauge gives the following readings when used to measure the...

A screw gauge gives the following readings when used to measure the diameter of a wire
Main scale reading : 0mm0mm
Circular scale reading : 52divisions52divisions
Given that 1mm1mm on main scale corresponds to 100divisions100divisions on the circular scale. The diameter of the wire from the above data is:

Options

  1. A0.52cm0 . 52cm
  2. B0.026cm0 . 026cm
  3. C0.26cm0 . 26cm
  4. D0.052cm0 . 052cm

Correct answer

D. 0.052cm0 . 052cm

Step-by-step solution

L.C.=1100mmL . C . = \dfrac{1}{100}mm

=0.01mm= 0 . 01mm

Now,

Diameter of wire =52×0.01= 52 \times 0 . 01

=0.52mm= 0 . 52mm

=0.052cm= 0 . 052cm

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