Home
Class 11
PHYSICS
Method 2 of DeltaU Work done by a gas ...

Method 2 of `DeltaU`
Work done by a gas in a given process is `-20J`. Heat given to the gas is 60J. Find change in internal energy of the gas.

Text Solution

Verified by Experts

`DeltaU=Q-W`
Substituting the values we have,
`DeltaU=60-(-20)`
`=80J`
`DeltaU` is positive. Hence, internal erergy of the gas is increasing.
Promotional Banner

Topper's Solved these Questions

  • LAWS OF THERMODYNAMICS

    DC PANDEY|Exercise Example Type 1|2 Videos

  • LAWS OF THERMODYNAMICS

    DC PANDEY|Exercise Example Type 2|1 Videos

  • LAWS OF MOTION

    DC PANDEY|Exercise Medical entrances gallery|39 Videos

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    DC PANDEY|Exercise Integer type Questions|10 Videos

Similar Questions

Explore conceptually related problems

In an adiabatic process 90 J of work is done on the gas. The change in internal energy of the gas is

Method 1 of DeltaU Temperature of two moles of a monoatomic gas is increased by 600 K in a given process. Find change in internal energy of the gas.

Method 5 of W Heat taken from a gas in a process is 80 J and increase in internal energy of the gas is 20J. Find work done by the gas in the given process.

A diatomic gas is heated at constant pressure. If 105J of heat is given to the gas, find (a) the change in internal energy of the gas (b) the work done by the gas.

In a cyclic process shown in the figure an ideal gas is adial gas is adiabatically taken from B to A , the work done on the gas during the process B to A is 30,J when the gas is taken from A to B the heat absorbed by the gas is 20 J Then change in internat energy of the gas in the process A to B is :

400 J of work is done on a gas to reduce its volume by compression adiabatically. What is the change in internal energy of the gas?

180 J of work is done on the system and at the same time 120 J of heat is given out. What is the change in the internal energy?

If a gas is comprssed adiabatically by doing work of 150 J the change in internal energy of the gas is

Method 2 of Q In a given process work done on a gas is 40 J and increases in its internal energy is 10J. Find heat given or taken to/from the gas in this process.

DC PANDEY-LAWS OF THERMODYNAMICS-Level 2 Subjective
  1. Method 2 of DeltaU Work done by a gas in a given process is -20J. He...

    Text Solution

    |

  2. Two moles of helium gas undergo a cyclic process as shown in Fig. Assu...

    Text Solution

    |

  3. 1.0 k-mol of a sample of helium gas is put through the cycle of operat...

    Text Solution

    |

  4. The density (rho) versus pressure (p) graph of one mole of an ideal mo...

    Text Solution

    |

  5. An ideal gas goes through the cycle abc. For the complete cycle 800J o...

    Text Solution

    |

  6. A cylinder of ideal gas is closed by an 8kg movable piston of area 60c...

    Text Solution

    |

  7. Three moles of an ideal gas (Cp=7/2R) at pressure p0 and temperature T...

    Text Solution

    |

  8. Two moles of helium gas(lambda=5//3) are initially at temperature 27^@...

    Text Solution

    |

  9. An ideal monoatomic gas is confined in a cylinder by a spring-loaded p...

    Text Solution

    |

  10. An ideal diatomic gas (gamma=7/5) undergoes a process in which its int...

    Text Solution

    |

  11. For an ideal gas the molar heat capacity varies as C=CV+3aT^2. Find th...

    Text Solution

    |

  12. One mole of an ideal monatomic gas undergoes the process p=alphaT^(1//...

    Text Solution

    |

  13. One mole of a gas is put under a weightless piston of a vertical cylin...

    Text Solution

    |

  14. An ideal monatomic gas undergoes a process where its pressure is inver...

    Text Solution

    |

  15. The volume of one mode of an ideal gas with adiabatic exponent gamma i...

    Text Solution

    |

  16. Two moles of a monatomic ideal gas undergo a cyclic process ABCDA as s...

    Text Solution

    |

  17. Pressure p, volume V and temperature T for a certain gas are related b...

    Text Solution

    |

  18. An ideal gas has a specific heat at constant pressure Cp=(5R)/(2). The...

    Text Solution

    |

  19. Three moles of an ideal gas being initially at a temperature Ti=273K w...

    Text Solution

    |