List of top Physics Questions on Thermodynamics asked in MHT CET

In case of 'free expansion', which one of the following statements is 'WRONG'?
One mole of diatomic ideal gas undergoes a cyclic process ABC as shown in the figure. The process BC is adiabatic. The temperatures at A, B and C are \(400\) K, \(800\) K and \(600\) K, respectively. The correct statement is
There is an expansion of a gas in a thermodynamic system. But this change cannot be plotted on a P-V diagram. Then it is
In an adiabatic process, which one of the following statement is true ?
Arrange the correct order of P-V diagrams in thermodynamics for an isothermal process, isobaric process, isochoric process and adiabatic process
The temperature of an ideal gas increases \(2\) times when compressed adiabatically to half the volume. Its equation of state is
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio \(C_{p}/C_{v}\) for the gas is
A monoatomic ideal gas, initially at temperature \(T_{1}\) is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature \(T_{2}\) by releasing the piston suddenly. If \(L_{1}\) and \(L_{2}\) be the lengths of the gas column before and after expansion respectively, then \(\frac{T_{1}}{T_{2}}\) is
Out of the following relations which one is true in the case of an adiabatic process, where \(\gamma =C_{p}/C_{v}\) ?
A monoatomic gas undergoes adiabatic change. Its pressure \(P\) and temperature \(T\) are related as \(P\propto T^{x}\) where \(x\) is
For any thermodynamic process, the work done by the system depends
One mole of a mono-atomic ideal gas is taken through a cycle ABCDA as shown in the P-V diagram, then
A gas is taken through a cycle \(A\rightarrow B\rightarrow C\rightarrow A\), as shown in the figure. The net work done by the gas is
In thermodynamic processes, which one of the following statements is 'NOT' correct ?
A gas for which \(\gamma =5/3\ (\gamma =C_{p}/C_{v})\) is heated at constant pressure. The percentage of heat supplied used for external work is
Identify the INCORRECT statement for isobaric process.
Which of the following is NOT a correct equation for adiabatic process?
Which of the following statements is NOT CORRECT?
In an isothermal process,
a. there is perfect thermal equilibrium with environment.
b. there is no change in internal energy during the process.
c. the work done is equal to zero.
d. the time taken is very large.
A gas for which \(\gamma\) is \(3/2\) is heated at constant pressure. The percentage of heat supplied for external work is nearly
A mono-atomic ideal gas, initially at temperature \(T_{1}\) is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature \(T_{2}\) by releasing the piston suddenly. \(L_{1}\) and \(L_{2}\) are the lengths of gas columns before and after the expansion, respectively. The value of \(\frac{T_{1}}{T_{2}}\) is \(\left[\gamma =\frac{5}{3}\right]\)
A rigid diatomic ideal gas is compressed adiabatically to \((1/32)\) of its initial volume. If the initial temperature of the gas is \(T_{1}\) (in kelvin) and the final temperature is "\(nT_{1}\)", the value of n is \(\{\gamma =1.4\}\)
The relation obeyed by a perfect gas during an adiabatic process is \(pV^{3/2}\). The initial temperature of the gas is 'T'. When the gas is compressed to half of its initial volume, the final temperature of the gas is
If R is the universal gas constant then the amount of heat needed to raise the temperature of 3 moles of an ideal monoatomic gas from 273 K to 393 K when no work is done is
A monoatomic gas is compressed to \((1/8)\) th of its volume adiabatically. If its initial pressure is \(P_{0}\), then increase in the pressure will be
For an adiabatic process, choose the correct relation