An ideal mono atomic gas is taken around the cycle ABCDA as shown in the PV diagram. The work done during the cycle is given by

               

One mole of an ideal gas at an initial temperature of T K does 6R joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is 5/3, the final temperature of gas will be

A gas at state A changes to state B through path I and II shown in figure. The changes in internal energy are ΔU₁ and ΔU₂ respectively. Then

The efficiency of Carnot engine is 50% and temperature of sink is 500 K. If the temperature of source is kept constant and its efficiency is to be raised to 60%, then the required temperature of the sink will be

The efficiency of a Carnot engine operating between temperatures of 100^oC and -23^oC will be

Which of the following parameters does not characterize the thermodynamic state of matter ?

In an adiabatic process, the state of a gas is changed from P₁, V₁, T₁ to P2, V₂, T₂. Which of the following relations is correct ?

When a system is taken from the initial state i to final state f along the path iaf, it is found that Q = 50 cal and W = 20 cal. If along the path ibf, Q = 36 cal, then W along the path ibf is

                      

The PT diagram for an ideal gas is shown in the figure, where AC is an adiabatic process. Find the corresponding PV diagram.

               

An ideal gas initially at P₁, V₁ is expanded to P₂, V₂ and then compressed adiabatically to the same volume V₁ and pressure P₃. If W is the net work done by the gas in complete process, which of the following is true ?