Question

If the unit of displacement is micrometer and unit of time is microsecond, the unit of velocity will be

• A. $100\text{m/sec}$
• B. $10\text{m/sec}$
• C. micrometers
• D. $\text{m/sec}$

Answer 1

The correct option is D $\text{m/sec}$

Given, unit of length is micrometer i.e. ${10}^{-6}\text{m}$
and, unit of time is microsecond i.e. ${10}^{-6}\text{sec}$
So, unit of velocity is given as
$v=\frac{\text{Displacement}}{\text{Time}}$
$\Rightarrow v=\frac{{10}^{-6}\text{m}}{{10}^{-6}\text{sec}}=\text{m/sec}$