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JAMB Physics 1985 Question 21

Question 21

Gas Laws

In a gas experiment, the pressure of the gas is plotted against the reciprocal of the volume of the gas at a constant temperature. The unit of the slope of the resulting curve is

  1. A.force
  2. B.force/m
  3. C.work
  4. D.force/m3
  5. E.energy/m2.
Show the answer and explanation

Answer: C (work)

Explanation

The slope is p ÷ (1/V) = pV, whose unit is N m−2 × m3 = N m, the unit of work (joule).