A screw gauge of pitch 0.5 mm is used to measure the diamete... — AI TEST SUBJECT | Mockzy

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A screw gauge of pitch 0.5 mm is used to measure the diameter of uniform wire of length 6.8 cm, the main scale reading is 1.5 mm 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]

6.8 cm²

3.4 cm²

3.9 cm²

2.4 cm²

A student performs an experiment to measure the thickness of a slab with a verni

Given below are two statements: Statement-I: Screw gauge with a pitch of 0.5 mm

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