Heat and Thermal ExpansionHard
Question
One mole of ideal gas undergoes a cyclic process ACBA as shown in figure. Process AC is adiabatic. The temperatures at A, B and C are 300, 600 and 450 K respectively : - One mole of ideal gas undergoes a cyclic process ACBA as shown in figure. Process AC is adiabatic. The temperatures at A, B and C are 300, 600 and 450 K respectively :
Options
A.In process CA change in internal energy is 225R.
B.In process AB change in internal energy is - 150 R.
C.In process AB change in internal energy is -225 R.
D.Change in internal energy during the whole cyclic process is + 150 R
Solution
Ans (C)
ᐃUCA = nCV(TA - TC)
1 ×
R × (300 - 450) = (- 225R)
ᐃUAB = nCV (TB - TA)
1 × R × (600 - 300) = + 450 R
ᐃUBC = nCV (TC - TB)
1 × R × (450 - 600) = - 225R
ᐃUABCA = ᐃUCA = ᐃUAB = ᐃUBC = 0
ᐃUCA = nCV(TA - TC)
1 ×
R × (300 - 450) = (- 225R)ᐃUAB = nCV (TB - TA)
1 ×
R × (600 - 300) = + 450 RᐃUBC = nCV (TC - TB)
1 ×
R × (450 - 600) = - 225RᐃUABCA = ᐃUCA = ᐃUAB = ᐃUBC = 0
Create a free account to view solution
View Solution FreeMore Heat and Thermal Expansion Questions
Two cylinders A and B fitted with piston contain the equal amount of an ideal diatomic gas at 300K. The piston of A is f...Three rod of some dimensions are arranged as shown in the figure. They have thermal conductivities k1, k2 & k3. The poin...The molar specific heat of the the process V ∝ T4 for CH4 at room temperature is : -...Tree closed vessels A, Sb and C at the same temperature T and contain gasses which obey the Maxwellian distribution of v...The internal energy of a system remains constant when it undergoes : -...