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In a vernier callipers, n divisions of i...

In a vernier callipers, n divisions of its main scale match with (n+1) divisions on its vernier scale. Each division of the main scale is a units. Using the vernier principle, calculate its least count.

A

`d//(m-1)`

B

d/(m+1)

C

d/m

D

md/(m+1)

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B
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