1. | \(1.5\%\) | increases by
2. | \(1.5\%\) | decreases by
3. | \(\frac13\%\) | increases by
4. | \(\frac23\%\) | increases by
1. | the pressure is halved |
2. | \(2\sqrt 2\) | the pressure decreases by a factor of
3. | the temperature is halved |
4. | the temperature decreases by a factor of \(2 \sqrt 2\) |
1. | \(\Delta Q=\Delta U+\Delta W\) |
2. | \(\Delta U=\Delta Q+\Delta W\) |
3. | \(\Delta U=\Delta Q-\Delta W\) |
4. | \(\Delta U+\Delta Q+\Delta W=0\) |
A gas undergoes an isothermal process. The specific heat capacity of the gas in the process is:
1. infinity
2. \(0.5\)
3. zero
4. \(1\)
Statement I: | \(100\%\) if friction and all dissipative processes are reduced. | The efficiency of any thermodynamic engine can approach
Statement II: | The first law of thermodynamics is applicable only to non-living systems. |
1. | Statement-I is incorrect and Statement-II is correct. |
2. | Both Statement-I and Statement-II are correct. |
3. | Both Statement-I and Statement-II are incorrect. |
4. | Statement-I is correct and Statement-II is incorrect. |
1. | \(120\) J. | work done by the system is
2. | \(120\) J. | work done on the system is
3. | \(80\) J. | work done by the system is
4. | \(80\) J. | work done on the system is
The ratio \(C_P/C_V=1.5\) for a certain ideal gas. The gas is taken at an initial pressure of \(2\) kPa and compressed suddenly to \(\frac14\) of its initial volume. The final pressure is:
1. \(\frac12\) kPa
2. \(4\) kPa
3. \(8\) kPa
4. \(16\) kPa