In a gas experiment, if the volume of the gas is plotted against the reciprocal of the pressure, the unit of the slope of the resulting curve is
-
A.
force -
B.
temperature -
C.
power -
D.
work
Correct Answer: Option D
Explanation
IF the volume of gas is plotted against the reciprocal of pressure, the slope will be given as
Slope = V/1/P = P x V
thus the unit of the slope will be;
| P = | Force |
| Area |
= Nm-2, = V = M3 = NM.
The unit NM (Newton – Meter) is the practical unit of work, which is the product of force (N) and Displacement (M).Note: It should be noted that the practical unit of work is Newton-Meter, whereas its S.I unit is Joules, just as energy.