MediumPhysics
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The vernier scale of a vernier calipers has 20 divisions, and total length of the vernier scale is equal to 18 divisions of the main scale. If one division of the main scale is 1 mm, the least count of the instrument is:
A
0.05 mm
B
0.10 mm
C
0.20 mm
D
0.40 mm
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