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Laws of Thermodynamics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsLaws of Thermodynamics1 Mark
Question
Consider the process on a system shown in figure. During the process, the work done by the system:
  1. Continuously increases.
  2. Continuously decreases.
  3. First increases then decreases.
  4. First decreases then increases.

✓

Answer

  1. Continuously increases.

Explanation:

Work done by a system, $\text{W}=\int\text{PdV}$

Here,

P = Pressure on the system

dV = change in volume

Since dV is positive, i.e. the volume is continuously increasing, work done by the system also continuously increases.

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