Question

A length of 19mm is divided into 20 equal parts to form a venier scale. If this venier is used with a main scale marked in mm, the smallest distance that can be measured using this combination is?
A. 0.5mm
B. 0.1mm
C. 0.05mm
D. 0.001mm

Answer 1

The length is given 19mm

total number parts = 20

Hence the minimum reading =$\dfrac{19}{20}=0.545mm$

or we can say it 0.5mm. Hence option A is the correct answer.