Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as :
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Question

Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as :

G1 Physics · Accepted Answer

Pitch=0.1 cm with 50 circular divisions gives LC=0.002 cm. A valid reading must be quoted to the nearest 0.002 cm. Among the options, 2.124 cm is consistent with the instrument resolution. Correct answer: D.