Physics · Errors and Measurements
In a screw gauge, the 5th division of the circular scale coincides with the reference line when the ratchet is closed, indicating a positive zero error. There are 50 divisions on the circular scale, and the main scale moves by 0.5 mm during one complete rotation. For a particular measurement, the main scale reading is 5 mm and the 20th division of the circular scale coincides with the reference line. Calculate the true corrected reading.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15.25 mm
- 25.15 mm✓
- 35.00 mm
- 45.20 mm
Correct answer
5.15 mm
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