The length of an object is measured using a vernier system whose main scale is 30 cm long with 600 divisions. If 19 divisions of the main scale coincide with 20 divisions of the vernier scale, then its least count is
Text Solution
Verified by ExpertsThe correct answer is:
D
Least count = MSB - VSD
and VSD = 
x MSB
Least count = (5 - 4.75) x 10 -4 = 0 .025 mm
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