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Units and Measurements question

2022 · 29 Jul · Shift 1 · Q66
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Units and Measurements question

2022 · 29 Jul · Shift 1 · Q66

JEE MainPhysicsUnits and MeasurementsMCQ+4 / −1
In an experiment to find out the diameter of wire using screw gauge, the following observations were noted : JEE Main 2022 (Online) 29th July Morning Shift Physics - Units & Measurements Question 82 English (A) Screw moves 0.5 mm0.5 \mathrm{~mm}0.5 mm on main scale in one complete rotation (B) Total divisions on circular scale =50=50=50(C) Main scale reading is 2.5 mm2.5 \mathrm{~mm}2.5 mm(D) 45th 45^{\text {th }}45th  division of circular scale is in the pitch line (E) Instrument has 0.03 mm negative error Then the diameter of wire is :
  1. A
    2.92 mm
  2. B
    2.54 mm
  3. C
    2.98 mm
  4. D
    3.45 mm
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