Question

A physical quantity is measured and its value is found to be $nu$ where $n =$ numerical value and $u =$ unit.

Then which of the following relations is true

• A. $n \propto u^{2}$
• B. $n \propto u$
• C. $n \propto \sqrt{u}$
• D. $n \propto \frac{1}{u}$

Answer 1

Answer: (D)

$n \propto \frac{1}{u}$

Answer 2

We know $P = nu =$constant $\therefore$ $n_{1}u_{1} = n_{2}u_{2}$ or $n \propto \frac{1}{u}$.