Question

When the jaws of a standard vernier calipers are closed, if the nth division of the vernier scale coincides with the nth M.S.D., the zero error is ___ .

• A. $n^{2}LC$
• B. (n+1) LC
• C. (n-1) L.C
• D. n X L.C

Answer 1

The correct option is D n X L.C

$\begin{array}{c}\text{Coinciding division}\left(n\right)\\ L\cdot C=\mathrm{least}\text{count}\\ \text{Zero error}=0+n\times L\cdot C\\ \text{(+ive)}\\ =n\times L\cdot C\end{array}$