Home
Class 12
PHYSICS
Find the change in internal energy of th...

Find the change in internal energy of the system when a system absorbs 2 kilocalorie of heat and at the same time does 500 joule of work

A

6400J

B

8200J

C

5600J

D

7900J

Text Solution

Verified by Experts

The correct Answer is:
D

`dQ=2000xx4.2J`
=8400 J
dW=500J
`dU=8400-500`
`=7900J`
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Absorption, reflection and transmission of heat radiation)|65 Videos
  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Perfectly black body, emmissive power and emmissivity)|38 Videos
  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Degrees of freedom and law of equipartition of energy & Application of specific hest capacities of gases)|87 Videos
  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos
  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    NIKITA PUBLICATION|Exercise MCQs (Sensitivity and accuracy of M.C.G.)|1 Videos

Similar Questions

Explore conceptually related problems

Find the change in internal energy of a gas when (i) it absorbs 80 calorie of heat and performs work equal to 170 Joule (ii) it absorbs 20 calorie of heat and work equal to 55 Joule is performed on it.

Calculate the changes in internal energy of a system if, 400 calorie of heat energy are added to the system and the system does 500 calories of work on the surroundings.

Find the change in internal energy (in joule) of a gas when it absorbs 40 calories of heat and performs work equal to 16 J .

Find the magnitude of change in internal energy when system does 150J work and absorbs 200J heat

The internal energy change in a system that has absorbed 2 kcal of heat and done 500J of work is

Find the change in internal energy if heat supplied to the gaseous system is 100 J and work done by the system is 80 J.

What is the internal energy of the system, when the amount of heat Q is added to the system and the system does not do any work during the process?

Change in internal energy when 4 kJ of work is done on the system and 1 kJ of heat is given out of the system is

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Thermodynamics)
  1. A gas receives an amount of heat equal to 110 J and performs 40 J of w...

    Text Solution

    |

  2. In a thermodynamic process, pressure of a fixed mass of a gas is chang...

    Text Solution

    |

  3. Find the change in internal energy of the system when a system absorbs...

    Text Solution

    |

  4. If the amount of heat given to a system is 40 J and the amount of work...

    Text Solution

    |

  5. The change in internal energy of a gas kept in a rigid cylinder on sup...

    Text Solution

    |

  6. When heat energy of 1500 J is supplied to a gas it is compressed from ...

    Text Solution

    |

  7. A gas at constant pressure of 4.5xx10^(5)Pa to a gas it is compressed ...

    Text Solution

    |

  8. A system absorbs 100 cal of heat and does an external work of 150 J. i...

    Text Solution

    |

  9. At a constant pressure of 20 Pa a gas is compressed from 10 m^(3) to 5...

    Text Solution

    |

  10. Five moles of hydrogen (gamma = 7//5), initially at STP, is compressed...

    Text Solution

    |

  11. The temperature of 2 moles of a gas is changed from 20^(@)C to 30^(@)C...

    Text Solution

    |

  12. A gas expands from 75 litres to 125 litres constant pressure of 4 atmo...

    Text Solution

    |

  13. At a constant pressure of 10^(4)Nm^(-2) , a gas expands by 0.25m^(3) ...

    Text Solution

    |

  14. A gas occupies 2 litre at S.T.P. It is provided 300 joule heat so that...

    Text Solution

    |

  15. At a constant pressure of 20 Pa a gas is compressed from 10 m^(3) to 5...

    Text Solution

    |

  16. Heat is supplied to a monoatomic gas which expands at constant pressur...

    Text Solution

    |

  17. Heat is supplied to a diatomic gas which expands at constant pressure....

    Text Solution

    |

  18. An ideal heat engine works between the temperature 327^(@)C (source) a...

    Text Solution

    |

  19. An ideal heat engine works between source at 127^(@)C and sink 27^(@)C...

    Text Solution

    |

  20. A carnot engine working between 300 K and 600 K has work output of 800...

    Text Solution

    |