The side of a square is increasing at the rate of $0.2\,cm / s$. The rate of increase of perimeter w.r.t. time is $...........\,cm / s$
$0.2$
$0.4$
$0.6$
$0.8$
A particle moves along the straight line $y=3 x+5$. Which coordinate changes at a faster rate?
The greatest value of the function $-5 \sin \theta+12 \cos \theta$ is
Frequency $f$ of a simple pendulum depends on its length $\ell$ and acceleration $g$ due to gravity according to the following equation $f=\frac{1}{2 \pi} \sqrt{\frac{ g }{\ell}}$. Graph between which of the following quantities is a straight line?