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Heat and Thermodynamics question

2012 · Q167
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Heat and Thermodynamics question

2012 · Q167

NEETPhysicsHeat and ThermodynamicsMCQ+4 / −1
One mole of an ideal gas goes from an initial state A to final state B via two processes : It first undergoes isothermal expansion from volume V to 3V and then its volume is reduced from 3V to V at constant pressure. The correct P-V diagram representing the two process is
  1. A
    AIPMT 2012 Prelims Physics - Heat and Thermodynamics Question 56 English Option 1
  2. B
    AIPMT 2012 Prelims Physics - Heat and Thermodynamics Question 56 English Option 2
  3. C
    AIPMT 2012 Prelims Physics - Heat and Thermodynamics Question 56 English Option 3
  4. D
    AIPMT 2012 Prelims Physics - Heat and Thermodynamics Question 56 English Option 4
View written solutionFree

Correct answer: D

AIPMT 2012 Prelims Physics - Heat and Thermodynamics Question 56 English Explanation
From the above P-V diagrams, (d) is correct, as from the question, the initial gas goes from volume V to 3V and then volume of the gas get reduced from 3V to V at constant pressure. In case of an isothermal expansion, P-V curve is rectangular hyperbola which is stated by (d).
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