Question

Name a convenient unit $\text{'}t\text{'}$to be used to measure the thickness of a single hair.

Answer 1

1. Generally, we prefer the S.I. unit to measure the distance between two opposite points.
2. Since the thickness of single hair is very less, we use a micrometer (micron) unit to describe it.
3. It is around$30to80\mu m\left(Micrometer\right)$.
4. Therefore we measure the thickness$\text{'}t\text{'}$ of a single hair in $micron\left(\mu \right)$ .