Question

If there are 10 minor divisions between two major divisions, one major division representing $1^{\circ }C$, one minor division will be equal to:

• A. $2^{\circ }C$
• B. $1^{\circ }C$
• C. $3^{\circ }C$
• D. $4^{\circ }C$

Answer 1

The correct option is B $1^{\circ }C$

Given, one major division $=1^{\circ }C$.
One major division equals 10 minor division.
$\therefore \text{1 minor division}=\frac{1}{10}\times \text{major division}\therefore \text{1 minor division}=\frac{1}{10}\times 1^{\circ }\text{C}\text{So,}\text{1 minor division}={0.1}^{\circ }\text{C}$
This is called the least count of thermometer.