Question

On the main scale of a vernier callipers, each centimeter length is divided into 10 divisions. If the vernier has to have a least count of $0.005cm$. The vernier scale should have

• A. 10 divisions
• B. 20 divisions
• C. 50 divisions
• D. 25 divisions

Answer 1

The correct option is B 20 divisions

$\begin{array}{cc}\text{No. of divisions on vernier scale}& =\frac{1M.S.D.}{\text{Least count}}\\ & =\frac{0.1cm}{0.005cm}\\ & =20\text{division}\end{array}$