A student noted the thickness of a glass sheet using a screw guage. On main scale , it reads three divisions while 8th division on the circular scale coincides with index line. Its thickness is:
Answers
The thickness of the glass sheet is 3.08 mm
Explanation:
Least count of screw gauge (LC) = 0.01 mm
Since 8 divisions on vernier coincides with the main scale
Therefore, the thickness of the glass
= reading on main scale + LC × Division on vernier sclae coinciding with the main scale
= 3 + 0.01 × 8
= 3 + 0.08
= 3.08 mm
Hope this answer is helpful.
Know More:
Q: A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickenss of a thin sheet of aluminium. Before starting the measurement, it is found that when the two jaws of the screw gauge are brought in contact, the 45th division coincides with the main scale line and that the zero of the main scale is barely visible. What is the thickness of the sheet if the main scale reading is 0.5 mm and the 25th division coincides with the main scale line?
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Q: A screw gauge has 50 divisions on its circular scale and its screw Moves 1 mm on turning it by 2 rotations when the flat end of the screw is in contact with the stud the zero of circular scale lies below the baseline and 4th division of circular scale is in line with the baseline. find
(1) the pitch
(2) the least count
(3) zero error of the screw gauge
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Answer:
3.8cm
Explanation: