NEET Physics Screw Gauge MCQ Question
A screw gauge is used to measure the diameter of a wire. The pitch of the screw is 0.5 mm and the circular scale has 50 divisions. If the zero error is +0.02 mm, what is the corrected diameter when the measured diameter is 2.34 mm?
32 mm
36 mm
34 mm
30 mm
Correct Answer
Detailed Explanation
The corrected diameter is found by subtracting the zero error from the measured diameter. Thus, 2.34 mm - 0.02 mm = 2.32 mm.
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