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Screw Gauge for JEE: 25 solved questions

Real JEE paper questions on screw gauge, part of experimental skills. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2008 to 2026. No sign-in needed to read them.

What this topic asks

• Pitch and least count — 7 questions
• Positive zero error — 7 questions
• Negative zero error — 5 questions
• Total reading — 3 questions
• Derived quantities — 3 questions

All 25 questions with solutions

• In a screw gauge, five complete rotations of the circular scale move it linearly by 2.5 mm. If the circular s… JEE Main 4th April 1st Shift 2026
• In an experiment, a set of readings are 1.24 mm, 1.25 mm, 1.23 mm, 1.21 mm. The expected least count of the i… JEE Main 28th Jan 2nd Shift 2026
• Assertion (A): If in five complete rotations of the circular scale the distance travelled on the main scale i… JEE Main 27th July 1st Shift 2021
• Using a screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is mea… JEE Main 3rd Sept 1st Shift 2020
• If the screw of a screw-gauge is given six rotations, it moves 3 mm on the main scale. If there are 50 divisi… JEE Main 9th Jan 1st Shift 2020
• The least count of the main scale of a screw gauge is 1 mm. The minimum number of divisions on its circular s… JEE Main 12th Jan 1st Shift 2019
• The least count of a screw gauge is 0.01 mm. If the pitch is increased by 75% and the number of divisions on… JEE Main 24th Jan 1st Shift 2025
• While measuring the diameter of a wire with a screw gauge, the main scale reads 1 mm and the circular scale r… JEE Main 6th April 1st Shift 2024
• In a screw gauge, five complete rotations move the screw 0.25 cm. There are 100 circular scale divisions. A w… JEE Main Online 2018
• A screw gauge gives, for the diameter of a wire, a main scale reading of 0 mm and a circular scale reading of… JEE Main 2011
• In a screw gauge, the reference line of the main scale coincides with the fifth division of the circular scal… JEE Main 2nd April 2nd Shift 2026
• A screw gauge of pitch 1 mm has 100 circular scale divisions. With nothing between the jaws, the zero of the… JEE Main 8th April 2nd Shift 2024
• In a screw gauge, the fifth division of the circular scale coincides with the reference line when the ratchet… JEE Main 26th Aug 1st Shift 2021
• The pitch of a screw gauge is 1 mm and there are 100 circular scale divisions. With nothing between the jaws,… JEE Main 25th Feb 1st Shift 2021
• A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch-scale… JEE Main 6th Sept 1st Shift 2020
• The pitch and the number of circular scale divisions of a screw gauge are 0.5 mm and 100. Tightened with no o… JEE Main 9th Jan 2nd Shift 2019
• In a screw gauge there are 100 circular scale divisions and the main scale moves 0.5 mm per rotation. The zer… JEE Main 30th Jan 1st Shift 2023
• In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when the st… JEE Main 23rd Jan 1st Shift 2026
• To find the diameter of a wire with a screw gauge the observations are: (A) the screw moves 0.5 mm on the mai… JEE Main 29th July 1st Shift 2022
• A screw gauge of pitch 0.5 mm and 50 circular scale divisions measures a thin aluminium sheet. On contact of… JEE Main 2016
• Two full turns of the circular scale of a screw gauge cover 1 mm on the main scale. The circular scale has 50… JEE Main 2008
• Students A and B use two screw gauges of equal pitch and 100 circular divisions to measure the radius of a wi… JEE Main 25th July 1st Shift 2021
• The diameter of a wire, measured with a screw gauge of least count 0.001 cm, is 0.08 cm. Its length, measured… JEE Main 2nd April 1st Shift 2026
• A screw gauge of pitch 0.5 mm measures the diameter of a uniform wire of length 6.8 cm; the main scale reads… JEE Main 26th July 1st Shift 2022
• A tiny metallic rectangular sheet has length and breadth 5 mm and 2.5 mm. Using a specially designed screw ga… JEE Main 28th Jan 1st Shift 2025