Discussion Forum



1)

One mole of a monoatomic 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?

2282019773_cyc.JPG


A) Process I is an isochoric process

B) In process II, gas absorbs heat

C) In process IV, gas releases heat

D) Processes I and III are not isobaric

Answer:

Option (B,C,D)

Explanation:

(b)   Process- I t is isothermal

  expansion   $\triangle U=0,W>0$

                    $\triangle Q=W>0$

(c)    Process - IV is isothermal compression

                  $\triangle U=0,W<0$

                 $\triangle Q=0,W<0$

(d)      Process - I and III are not isobaric beacause in isobaric process T $\alpha$ V  hence, T-V graph should be a straight line passing through origin.