Physics-
General
Easy
Question
While measuring diameter of a wire using a screw gauge the main scale reading is 7mm and zero of circular scale is 35 divisions above the reference line. If the screw gauge has a zero error of -0.003cm , the correct diameter of the wire is (given least count = 0.001cm)
- 0.735cm
- 0.732cm
- 0.738 cm
- 7.38 cm
The correct answer is: 0.738 cm
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