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A vernier calipers has `1mm `marks on the main scale. It has `20` equal divisions on the Verier scale which match with `16` main scale divisions. For

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A vernier calipers has `1mm `marks on the main scale. It has `20` equal divisions on the Verier scale which match with `16` main scale divisions. For this Vernier calipers, the least count is
A. `0.02mm`
B. `0.05mm`
C. `0.1mm`
D. `0.2mm`
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Correct Answer - D
`L.C.= 1 M.S.D-1V.S.D`
`=(1-(16)/(20))M.S.D`
`=(1-(4)/(5))(1mm)=0.2mm`
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