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Question 31022
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Kinetic Theory and Thermodynamics: First Law MCQ

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First LawEasyQuestion 31022

Question

In first law ΔQ = ΔU + W, W represents:
  1. A
    Work done on gas
  2. B
    Work done by gas
    Correct
  3. C
    Heat converted to work
  4. D
    Change in kinetic energy

Correct answer

Work done by gas

Explanation

W = ∫PdV = work done BY the gas on surroundings. If gas expands, W > 0; if compressed, W < 0.

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