Question

The main scale of vernier calipers reads in millimeter, and its one main scale division is equal to one millimeter. Its vernier is divided into $6$ divisions, which coincide with $15$ divisions of main scale. Furthermore, when a cylinder is tightly placed along its length between two jaws, it is observed that the zero vernier scale lies just right to the $25$th division of the main scale and the fifth division of the vernier scale coincide with $38$th division of the main scale. The measured value is $\frac{2550}{n}$ millimeter.

• A. 100
• B. 100.0
• C. 100.00

Answer 1

Answer: (A), (B), (C)

$6$ V $=15S$

V $=2.5\text{mm}$

So, $5$V $=12.5\text{mm}$

$x=13\text{mm}–12.5\text{mm}=0.50\text{mm}$

So, measured value $=25.50\text{mm}$