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Concepts Of Physics MCQ Edition [Volume 2]PhysicsSpecific Heat Capacities of Gases

Suppose Q and W represent the amount of heat supplied to an ideal gas and the work performed by it during an adiabatic process.

Options

  1. AQ = W
  2. BW = 0
  3. CQ = 0
  4. DQ W

Correct answer

D. Q W

Step-by-step solution

For an adiabatic process, there is no exchange of heat between the system and its surroundings. Therefore, the heat supplied to the gas is zero, which means Q = 0 . From the first law of thermodynamics, Q = U + W . Since Q = 0 , we have W = - U . For a general adiabatic process involving expansion or compression, the work done W 0 . Hence, Q W .

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