Home
Class 12
PHYSICS
The temperature of a refrigerator is kep...

The temperature of a refrigerator is kept at`7^@C` to keep the food articles kept in it in good condition. What is its coefficient of performance, if the room temperatures `37^@C `?

A

7.5

B

8.3

C

9.33

D

10.5

Text Solution

Verified by Experts

The correct Answer is:
C
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

If the temperature of the interior of a refrigerator is 7^@C and the temperature of surroundings is 27^@C , What should be the coefficient of performance of the refrigerator working between these temperature ?

What is the change in the activation energy if the temperature is raised by 10°C?

If the temperature of a body falls by 1^@C , What will be the change in temperature in Kelvin scale.

MBD PUBLICATION-THERMODYNAMICS-QUESTION BANK
  1. In an ideal refrigerator, heat from inside at 280 K is transferred to ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. The efficiency of a heat engine is eta and the coefficient of performa...

    Text Solution

    |

  12. A carnot engine, having an efficiency eta=1/10as heat engine, is used ...

    Text Solution

    |

  13. One gm of water at 373 K is converted into steam at the same temperatu...

    Text Solution

    |

  14. Calculate the change in internal energy when 0.15 kg of air heated fro...

    Text Solution

    |

  15. Calculate the minimum work that must be done to compress 1.0 gm of hyd...

    Text Solution

    |

  16. One gram mole of oxygen gas at 127^@C expands isothermally until its v...

    Text Solution

    |

  17. 10 moles of hydrogen at N.T.p is compressed adiabatically so that its ...

    Text Solution

    |

  18. Calculate the final temperature when a given mass of a gas at 0^@C is ...

    Text Solution

    |

  19. One gm mole of an ideal gas at S.T.p is subjected to a reversible adia...

    Text Solution

    |

  20. Calculate the efficiency of a Carnot cycle working between the two tem...

    Text Solution

    |