Question

In a standard vernier callipers, when the jaws are in contact with each other if the 5${}^{th}$ division on the main scale coincides with 4${}^{th}$ division on the vernier scale, then the zero error is negative.

• A. True
• B. False

Answer 1

The correct option is A True

$\begin{array}{c}\text{Normally, in case of zero error}{10}^{\text{th}}\text{division of Vernien Scale coincides}\\ \text{with gth dirision of main ocale.}\\ \text{If}{4}^{\text{th}}\text{division of Vernien Scale coincides with}{5}^{\text{th}}\text{division then it will}\\ \text{be negative error.}\end{array}$