If a system undergoes contraction of volume, then the work done by the system will be:
Correct answer: B. Negative
- A. Zero
- B. Negative
- C. Negligible
- D. Positive
Explanation
∆W=P∆V, here ∆V is negative so ∆W will be negative. When a system undergoes a contraction of volume, the work done by the system will be negative. This is because work is done on the system when it contracts (volume decreases), resulting in a negative work value. The work done is expressed as the product of the force applied and the distance the system contracts in the direction of the force, which is negative when considering a reduction in volume.
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About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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