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The distance moved by screw of a screw gauge is 2mm in 4 rotations and there are 50 divisions on it's cap. When nothing is put between it's jaws, 30th division on circular sacle coincides with reference line, with zero of circular scale lying above the reference line. When a plate is placed between the jaws, main scale reads 2 divisions and circular scale reads 20 divisions. Thickness of plate is? a)0.9mm b)1.2mm c)1.4mm d)1.5mm?
Verified Answer
The distance moved by screw of a screw gauge is 2mm in 4 rotations and...
Dear student,
There are 50 divisions.
And it moves 2 mm in four rotations.
30 th division coincides with reference when there is nothing placed. This is the error = (0.5/50)*30
4 rotations gives 2 mm
SO, 1 rotation gives 0.5mm
Every rotation is 50 divisions.
1 division is 0.5/50.
Reading is 2 circular division +20 divisions. = 1+(0.5/50)*20
Error = -(1.5/5)
Reading = 0.9mm   
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Most Upvoted Answer
The distance moved by screw of a screw gauge is 2mm in 4 rotations and...
Given data:
- Distance moved by screw in 4 rotations = 2mm
- Number of divisions on circular scale = 50
- When nothing is placed between the jaws, the 30th division on the circular scale coincides with the reference line.

Calculations:
- Distance moved by screw in one rotation = 2mm / 4 = 0.5mm
- Least count of the screw gauge = Distance moved by screw / Total number of divisions on circular scale
= 0.5mm / 50 = 0.01mm

When the plate is placed:
- Main scale reading = 2 divisions
- Circular scale reading = 20 divisions
- Total reading = Main scale reading + (Circular scale reading * Least count)
= 2 + (20 * 0.01)
= 2 + 0.2
= 2.2mm

Thickness of the plate:
- Thickness of the plate = Total reading with plate - Total reading without plate
= 2.2mm - 2mm
= 0.2mm
Hence, the thickness of the plate is 0.2mm.
Therefore, the correct answer is not provided in the options given.
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The distance moved by screw of a screw gauge is 2mm in 4 rotations and there are 50 divisions on it's cap. When nothing is put between it's jaws, 30th division on circular sacle coincides with reference line, with zero of circular scale lying above the reference line. When a plate is placed between the jaws, main scale reads 2 divisions and circular scale reads 20 divisions. Thickness of plate is? a)0.9mm b)1.2mm c)1.4mm d)1.5mm?
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The distance moved by screw of a screw gauge is 2mm in 4 rotations and there are 50 divisions on it's cap. When nothing is put between it's jaws, 30th division on circular sacle coincides with reference line, with zero of circular scale lying above the reference line. When a plate is placed between the jaws, main scale reads 2 divisions and circular scale reads 20 divisions. Thickness of plate is? a)0.9mm b)1.2mm c)1.4mm d)1.5mm? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The distance moved by screw of a screw gauge is 2mm in 4 rotations and there are 50 divisions on it's cap. When nothing is put between it's jaws, 30th division on circular sacle coincides with reference line, with zero of circular scale lying above the reference line. When a plate is placed between the jaws, main scale reads 2 divisions and circular scale reads 20 divisions. Thickness of plate is? a)0.9mm b)1.2mm c)1.4mm d)1.5mm? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The distance moved by screw of a screw gauge is 2mm in 4 rotations and there are 50 divisions on it's cap. When nothing is put between it's jaws, 30th division on circular sacle coincides with reference line, with zero of circular scale lying above the reference line. When a plate is placed between the jaws, main scale reads 2 divisions and circular scale reads 20 divisions. Thickness of plate is? a)0.9mm b)1.2mm c)1.4mm d)1.5mm?.
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