Home
Class 12
PHYSICS
An ideal heat engine working between 27^...

An ideal heat engine working between `27^(@)C` and `127^(@)C` takes 400 cal of heat in one cycle. The work done is

A

75 cal

B

50 cal

C

100 cal

D

200 cal

Text Solution

Verified by Experts

The correct Answer is:
C
`eta=(dW)/(dQ)`
`(1)/(4)=(dW)/(400)`
`dW=100cal(eta=1-(300)/(400)=(1)/(4))`
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

A Carnot's engine woeking between 27^(@)C and 127^(@)C takes up 800 J of heat from the reservoir in one cycle. What is the work done by the engine

An engine operating between 100^(@)C and 0^(@)C takes 453.6 kcal of heat. How much useful work can be done by it ?

If a carnot engine works between 127^(@)C and 527^(@)C then its efficiency is

The efficiencty of a carnot engine working between 127^(@) C and 77^(@) C is

A heat engine operating between 227^(@)C and 77^(@)C absorbs 10 kcal of heat from the 227^(@)C reservoir reversibly per cycle. Calculate total work done (in kcal) in two cycles.

A heat engine operating n between 227^(@) and 27^(@) C absorbs 2 K a cal of heat from the 227^(@) reservoir reversibly per cycle . The amount of work done in one cycle is

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Thermodynamics)
  1. At a constant pressure of 10^(4)Nm^(-2) , a gas expands by 0.25m^(3) ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  9. A Carnot's engine whose sink is at temperature of 300K has an efficien...

    Text Solution

    |

  10. An ideal heat engine working between 27^(@)C and 127^(@)C takes 400 ca...

    Text Solution

    |

  11. A Carnot reversible engine converts 1//6 of heat input into work . Whe...

    Text Solution

    |

  12. What is the efficiency of a heat engine whose temperature of source an...

    Text Solution

    |

  13. The efficiency of a Carnot engine operating between temperatures of 10...

    Text Solution

    |

  14. Two heat engines A and B have their sources at 327^(@)C and 227^(@)C a...

    Text Solution

    |

  15. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

    Text Solution

    |

  16. A heat engine works on a carnot cycle with a heat sink of 27^(@)C. The...

    Text Solution

    |

  17. A carnot engine takes 300 cal. of heat at 500 k and rejects 150 cal o...

    Text Solution

    |

  18. An ideal heat engine exhausting heat at 77^(@) is to have a 30% effici...

    Text Solution

    |

  19. A heat engine takes in 300 K cal of heat from a reservoir at 627^(@)C ...

    Text Solution

    |

  20. The efficiency of the reversible heat engine is eta(r) and that of irr...

    Text Solution

    |