1.

In a vernier callipers, `N` divisions of the main scale coincide with `N + m` divisions of the vernier scale. what is the value of `m` for which the instrument has minimum least count.A. `1`B. `N`C. `(N)/(10)`D. `(N)/(2)`

Answer» Correct Answer - A
`(N+m)VSD=(N)MSD`
`:. 1VSD=((N)/(N+m))MSD`
`LC=1MSD-1VSD`
`=1MSD-((N)/(N+m))MSD`
`=((1)/(1+N//m))MSD`
For minimum value of least count `m` should be minimum or `1`.


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