Home
Class 12
PHYSICS
An ideal carnot engine, whose efficiency...

An ideal carnot engine, whose efficiency is `40%`, receives heat from the source at 500 K. The efficiency is to be increased to `50%` by keeping the same temperature of the sink. What should be the temperature of the source ?

A

900K

B

800 K

C

700 K

D

600 K

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER (HEAT TRANSFER)

    MBD PUBLICATION|Exercise QUESTION BANK|217 Videos
  • VECTOR ANALYSIS

    MBD PUBLICATION|Exercise QUESTION BANK|250 Videos

Similar Questions

Explore conceptually related problems

What is efficiency of an engine where source and sink are at same temperature ?

What happens to the efficiency of a carnot engine if the temperature of the sink is lowered keeping that of source constant ?

A Carnot engine draws 500 cal of heat from a source at 500K and rejects 300 cal of heat to the sink. Calculate the temperature of the sink and the efficiency of the engine.

What is efficiency of a carnot engine working between temperature of 300 K and 600 K ?

A cannot engine operates between temperature T and 400 K(T>400K). If efficiency of engine is 25% , the temperature T is:

MBD PUBLICATION-THERMODYNAMICS-QUESTION BANK
  1. Even carnot engine cannot give 100% efficiency because we cannot

    Text Solution

    |

  2. The power of a carnot engine is

    Text Solution

    |

  3. An ideal carnot engine, whose efficiency is 40%, receives heat from th...

    Text Solution

    |

  4. The efficiency of an ideal heat engine can be100% if the sink (exhaust...

    Text Solution

    |

  5. A carnot engine has the same efficiency between 100 K and 500 K and T ...

    Text Solution

    |

  6. A carnot engine first works between 100^@C and 0^@C and then between 0...

    Text Solution

    |

  7. A carnot engine takes in heat from a reservoir of heat at 427^@C and g...

    Text Solution

    |

  8. In the carnot engine, heat Q1 is absorbed from the source at temperatu...

    Text Solution

    |

  9. The temperatures of the source and the sink of a heat engine are 127^@...

    Text Solution

    |

  10. Ina Carnot engine, the temperature of the reservoir is 927^@C and that...

    Text Solution

    |

  11. In an ideal refrigerator, heat from inside at 280 K is transferred to ...

    Text Solution

    |

  12. The inside and outside temperatures of a refrigerator are 273 K and 30...

    Text Solution

    |

  13. The temperature of a refrigerator is kept at7^@C to keep the food arti...

    Text Solution

    |

  14. A refrigerator abstracts 1600 calories of heat from the ice trays. The...

    Text Solution

    |

  15. A carnot engine has an efficiency of 20%. The energy is supplied to th...

    Text Solution

    |

  16. For a carnot engine the source and the sink temperatures are 527^@C an...

    Text Solution

    |

  17. A carnot engine operates between 227^@C and 127^@C. It absorbs 80 kilo...

    Text Solution

    |

  18. The efficiency of a heat engine is 50% and the temperature of the sink...

    Text Solution

    |

  19. A carnot engine whose sink is at 300^@ K has an efficiency of 40%. By ...

    Text Solution

    |

  20. What is the least amount of work that must be done to freeze ten gram ...

    Text Solution

    |