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The nth division of main scale coincides...

The nth division of main scale coincides with (n +1) th division of vernier scale. Given one main division is equal to 'a' units. Find the least count of the vernier.

A

`(L)/((n-1))unit`

B

`(n-1)` L unit

C

`((L)/(n-1))` unit

D

`((nL)/(n+1))` unit

Text Solution

Verified by Experts

`1VSD=((n)/(n+1))MSD`
`V.C.=1MSD-1VSD=(1-(n)/(n+1))MSD`
`=((L)/(n+1))unit`
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