JEE Mains 26-July-2022 Shift 1 Solved Paper

Section: Physics

Question : 50 of 90

Marks: +1, -0

A screw gauge of pitch 0.5‌mm is used to measure the diameter of uniform wire of length 6.8‌cm, the main scale reading is 1.5‌mm and circular scale reading is 7 . The calculated curved surface area of wire to appropriate significant figures is :
[Screw gauge has 50 divisions on its circular scale]

[26-Jul-2022-Shift-1]

6.8cm2
3.4cm2
3.9cm2
2.4cm2

Validate

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