Home
Class 11
PHYSICS
The internal enegy of an ideal gas decre...

The internal enegy of an ideal gas decreases by the same amount as the work done by the system.

A

The temperature of the system must deccrease

B

The process must be adiabatic

C

The process must be isothermal

D

The process must be isobaric.

Text Solution

Verified by Experts

The correct Answer is:
A, B
When loss in internal energy= work done by the system `Q=0`. The peocess must be adiabatic. Further, loss in internal energy indicates decrease in temperature of the gas.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    PRADEEP|Exercise Interger Type questions|11 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise Assertion- Reason Type Questions|19 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise Multiple choice questions (NCERT)|10 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise Assertion- Reason Type questions|20 Videos

  • WORK, ENERGY AND POWER

    PRADEEP|Exercise Assertion-Reason Type Questions|24 Videos

Similar Questions

Explore conceptually related problems

The internal energy of an ideal gas decreases by the same amount as the work done by the system (i) The process must be adiabatic (ii) The process must be isothermal (iii) The process must be isobaric (iv) The temperature must decrease

The internal enegy of an ideal gas decreases nu the same amount as the work done by the system.

The internal energy (U) of an ideal gas decreases by the same amount as the work done by the system:

During the adiabatic expansion of 2 moles of a gas, the internal energy of the gas is found to decrease by 2 joules , the work done during the process on the gas will be equal to

During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J . The work done by the gas in this process is

In an isobaric process of an ideal gas. The ratio of heat supplied annd work done by the system [i.e.,((Q)/(W))] is

550 kJ "cycle" ^(-1) work is done by 1 mol of an ideal gas in a cyclic process. The amount of heat absorbed by the system in one cycle is

Assertion: If a gas is heated isothennally, then no part of the heat supplied is used to increase the internal energy. Reason: Change in internal energy equals work done on the system.

One mole of an ideal gas expand spontaneously into a vacccum. The work done is

PRADEEP-THERMODYNAMICS-Multiple choice questions.
  1. The work done in which of the following processes is zero

    Text Solution

    |

  2. In which of the following process (es), there is no change in the inte...

    Text Solution

    |

  3. In a process on a system, the initial pressure and volume are equal to...

    Text Solution

    |

  4. The pressure p and volume V of an ideal gas both increase in a process...

    Text Solution

    |

  5. Let Q and W denote the amount of heat given to an ideal gas and the wo...

    Text Solution

    |

  6. A gas kept in a container of finite conductivity is suddenly compresse...

    Text Solution

    |

  7. Refer to figure DeltaU(1) and DeltaU(2) be the changes in internal ene...

    Text Solution

    |

  8. One mole of an ideal gas in initial state A undergoes a cyclic process...

    Text Solution

    |

  9. A system goes from A and B via two processes. I and II as shown in fig...

    Text Solution

    |

  10. The temperature -entropy diagram of a reversible engine cycle is given...

    Text Solution

    |

  11. The internal enegy of an ideal gas decreases by the same amount as the...

    Text Solution

    |

  12. Which of the following graphs correctly represents the variation of be...

    Text Solution

    |

  13. A gas is copmressed isothermally to half its volume. BY what factor do...

    Text Solution

    |

  14. A gas is compressed adiabatically to half its volume. By what factor d...

    Text Solution

    |

  15. A gas is suddenly compressed to 1/4th of its original volume. Caculate...

    Text Solution

    |

  16. A Carnot engine absorbs 6xx10^(5)cal. At 227^(@)C. Heat rejected to th...

    Text Solution

    |

  17. Work done //cycle by the engine in the above questions is

    Text Solution

    |

  18. Efficiency of the engine in the above questions is

    Text Solution

    |

  19. At what temperature should the sink be maintained to increase the effi...

    Text Solution

    |

  20. What should be the temperature of the source to increases the efficien...

    Text Solution

    |