Q8 of 27 Page 85

An ideal gas undergoes isothermal process from some initial state i to final state f. Choose the correct alternatives.

In isothermal process the temperature is constant therefore

internal energy is constant and thus net change in internal


energy is zero.




option (a, d) is correct.

More from this chapter

All 27 →
6

Three copper blocks of masses M1, M2 and M3 kg respectively are brought into thermal contact till they reach equilibrium. Before contact, they were at T1, T2, T3 (T1 > T2 > T3 ). Assuming there is no heat loss to the surroundings, the equilibrium temperature T is (s is specific heat of copper)

 7

Which of the processes described below are irreversible?

 9

Figure 12.5 shows the P-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state.


 10

Consider a cycle followed by an engine (Fig. 12.6) 1 to 2 is isothermal 2 to 3 is adiabatic 3 to 1 is adiabatic Such a process does not exist because