1)

One mole of a monoatomic ideal gas is taken along two cyclic  processes E→ F→ G→ E  and

E→F→ H→ E as shown in the p-V diagram.

 The processes involved are purely isochoric, isobaric, isothermal or adiabatic.

 1052021579_p6.JPG

 Match the paths in List I with the magnitudes of the work done in List II and select the correct answer using the codes given below the lists.

1052021546_list3.JPG


A) P:4,Q:3,R:2,S:1

B) P:4,Q:3, R:1, S:2

C) P:3, Q:1, R:2, S:4

D) P:1,Q:3,R:2, S:4

Answer:

Option A

Explanation:

1052021105_p7.JPG

in F→ G work done in isothermal process is 

nRTln(VfVi)=32p0V0ln(32V0V0)

  =32p0V0ln25=160p0V0ln2

InGE,W=p0V=p0(31V0)=31p0V0

 In G H , work done is less than 31 p0V0 , i.e, 24 p0V0

 In F H workdone is 36 p0V0