NEET Physics Screw Gauge MCQ Question
Which of the following statements about the screw gauge is correct?
The least count is defined as the pitch divided by the number of divisions on the circular scale.
The linear scale reading alone determines the total measurement without any need for the circular scale.
A screw gauge with a pitch of 1 mm and 50 divisions will have a least count of 0.02 mm.
Backlash error occurs when the screw and nut do not fit tightly, allowing for measurement inaccuracies.
Correct Answer
Detailed Explanation
The least count of a screw gauge is calculated by dividing the pitch of the screw by the number of divisions on the circular scale, as specified in the provided context. Options B and C misrepresent the principles of measurement, and while D is true, it does not directly relate to the calculation of least count.
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