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JEE Advanced · Physics · 13. Thermodynamics

One mole of a monatomic ideal gas undergoes a cyclic process as shown in the figure (where V is the volume and T is the temperature). Which of the statements below is (are) true?

  1. A Process I is an isochoric process
  2. B In process II , gas absorbs heat
  3. C In process IV , gas releases heat
  4. D Processes  I and III are not isobaric
Verified Solution

Answer & Solution

Correct Answer

(B) In process II , gas absorbs heat

Step-by-step Solution

Detailed explanation


(A) Process- I is not isochoric, V is decreasing
(B) Process- II is isothermal expansion
U=0, W>0
Q>0
(C) Process- IV is isothermal compression
U=0, W<0
Q<0
(D) Process- I and III are NOT isobaric because in isobaric process T V hence isobaric TV graph will be linear
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