Home
Class 11
PHYSICS
In a Carnot engine when T(2) = 0^(@)C an...

In a Carnot engine when `T_(2) = 0^(@)C` and `T_(1) = 200^(@)C` its efficiency is `eta_(1)` and when `T_(1) = 0^(@)C` and `T_(2) = -200^(@)C`. Its efficiency is `eta_(2)`, then what is `eta_(1)//eta_(2)`?

A

0.577

B

0.733

C

0.638

D

Can not be calculated

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SURFACE TENSION

    ERRORLESS |Exercise Exercise|214 Videos

  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos

Similar Questions

Explore conceptually related problems

A Carnot engine operates between 200^(@)C and 20^(@)C . Its maximum possible efficiency is:

A Carnot's engine is made to work between 200^(@)C and 0^(@)C first and then between 0^(@)C and -200^(@)C . The ratio of efficiencies of the engine in the two cases is

What per cent T_(1) is of T_(2) for a heat engine whose efficiency is 10%

In an isochoric process if T_(1)=27^(@)C and T_(2)=127^(@)C then P_(1)//P_(2) will be equal to

The efficiency of an engine is 1/2. When T_(2) is reduced by 100^(@)C , the efficiency becomes 2/3. Find T_(1)

The temperatures T_(1) and T(2) of two heat reservoirs in an ideal carnot engine are 1500^(@)C and 500^(@)C . Which of these (a) increasing T_(1) by 100^(@)C or (b) decreasing T_(2) by 100^(@)C would result in greater improvement of the efficiency of the engine?

What percentage T_(1) is of T_(2) for a 10% efficiency of a heat engine?

ERRORLESS -THERMODYNAMICS-All Questions
  1. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

    Text Solution

    |

  2. An ideal Carnot's engine whose efficiency 40% receives heat of 500K. I...

    Text Solution

    |

  3. In a Carnot engine when T(2) = 0^(@)C and T(1) = 200^(@)C its efficien...

    Text Solution

    |

  4. A carnot's engine works between a source at a temperature of 27^(@)C a...

    Text Solution

    |

  5. A Carnot engine operates between 277^(@)Cand . 27^(@)CEfficiency of th...

    Text Solution

    |

  6. A measure of the degree of disorder of a system is known as

    Text Solution

    |

  7. A Carnot engine has the same efficiency between 800 K to 500 K and x K...

    Text Solution

    |

  8. A scientist says that the efficiency of his heat engine which operates...

    Text Solution

    |

  9. A Carnot's engine is made to work between 200^(@)C and 0^(@)C first an...

    Text Solution

    |

  10. Efficiency of a Carnot engine is 50% when temperature of outlet is 500...

    Text Solution

    |

  11. Even Carnot engine cannot give 100% efficiency because we cannot

    Text Solution

    |

  12. Even Carnot engine cannot give 100% efficiency because we cannot

    Text Solution

    |

  13. A Carnot engine takes 3xx10^6 cal of heat from a reservoir at 627^@C a...

    Text Solution

    |

  14. The first operation involved in a Carnot cycle is

    Text Solution

    |

  15. For which combination of working temperatures the efficiency of Carnot...

    Text Solution

    |

  16. The efficiency of Carnot engine when source temperature is T 1 and sin...

    Text Solution

    |

  17. An ideal heat engine working between temperature T(1) and T(2) has an ...

    Text Solution

    |

  18. An ideal refrigerator has a freezer at a temperature of -13^(@)C. The ...

    Text Solution

    |

  19. In a mechanical refrigerator the low temperature coils are at a temper...

    Text Solution

    |

  20. An engine is supposed to operate between two reservoirs at temperature...

    Text Solution

    |