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,

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,, 2 . 121 cm, 2 . 124 cm, 2 . 125 cm, 2 . 123 cm

MARKS App · Accepted Answer

Thickness = M . S . Reading + Circular Scale Reading ( L . C . ) Here least count is 0 . 002 cm per division . From all the four options, the second answer is divisible by this least count. Hence option 2 is correct.

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