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CGP EDU Academic Team
Published on: August 21, 2026
A student measured the diameter of a small steel ball using a screw gauge of least count 0,001 cm. The main scale reading is 5 mm and 0 of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of-0,004 cm, the correct diameter of the ball is -
Text Solution
Verified by ExpertsThe correct answer is:
LC = 0.001 cm
Main scale reading = 5 mm
Zero error = -0.004
GSR (least count) = 0.025 cm
D = 0.5 + 0.025 + 0.004
= 0.529 cm
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