Identify the pair whose dimensions are equal.

$Pascal-Second$ has the dimension of:

Which of the following is different from the others in terms of units?

Find the rate of change of the volume of a sphere with respect to its surface area when the radius is $2 \ cm$.

The density of a solid ball is to be determined in an experiment. The diameter of the ball is measured with a screw gauge,whose pitch is $0.5 \ mm$ and there are $50$ divisions on the circular scale. The reading on the main scale is $2.5 \ mm$ and that on the circular scale is $20$ divisions. If the measured mass of the ball has a relative error of $2 \%$,the relative percentage error in the density is (in $\%$)

Select the pair from the following that does not have the same dimensions.