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JEE Main Physics Class 11 Physical world and Measurements Part 2 Questions

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Question : 73

Total: 100

In an experiment to find out the diameter of wire using screw gauge, the following observations were noted :

(A) Screw moves 0.5‌mm on main scale in one complete rotation
(B) Total divisions on circular scale =50
(C) Main scale reading is 2.5‌mm
(D) 45‌th ‌ division of circular scale is in the pitch line
(E) Instrument has 0.03‌mm negative error
Then the diameter of wire is :

[29-Jul-2022-Shift-1]

2.92‌mm
2.54‌mm
2.98‌mm
3.45‌mm

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