Home
Class 12
PHYSICS
Determine coefficient of performance of ...

Determine coefficient of performance of given temperature limit.
`T_(1) = 27^(@)C` [outside fridge]
`T_(2) = - 23 ^(@)C` [inside fridge]

A

4

B

5

C

6

D

7

Text Solution

Verified by Experts

The correct Answer is:
B
COP = ?
`T_(1) = 300K`
`T_(2) = 250 K`
`"COP" = (Q_(2))/(Q_(1)-Q_(2))`
`= (T_(2))/(T_(1) - T_(2))`
`= (250)/(50)`
`"COP" = 5`
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2019 25 MAY MORNING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|54 Videos

  • AIIMS 2019 26 MAY MORNING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|32 Videos

Similar Questions

Explore conceptually related problems

If the coefficient of performance of a refrigerator is 5 and operates at the room temperature ( 27^(@) C), find the temperature inside the refrigerator.

What is temperature coefficient (T.C.)?

Obtain a general relationship between temperature coefficient of resistance alpha_(1) and alpha_(2) at temperature T_(1) .^@C and T_(2) .^@C for a given conductor.

The amount of heat conducted out per second through a window, when inside temperature is 10^(@)C and outside temperature is -10^(@)C , is 1000 J. Same heat will be conducted in through the window, when outside temperature is -23^(@)C and inside temperature is:

For a glass window of area 1500 cm^2 and thickness 0.5 cm, determine the rate of loss of heat if the temperature inside the window is 35^@C and outside is -2^@C . Take, coefficient of thermal conductivity of glass = 2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1)

Two curves are given at temperatures T_(1) and T_(2) in an isothermal process, then-

A radiator whose temperature is T^(@)C is used to heat the room in the cold weater The radiator is able maintain a room temmperature of 30^(@)C when ouside temperature is 10^(@)C and 15^(@)C when outside temperature is 30^(@)C Determine the temperature of the radiator [Assume Newton's law of cooling to be valid] .

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2019 26 MAY EVENING SHIFT-PHYSICS
  1. A capacitor is connected to a battery of voltage V. Now a di-electric ...

    Text Solution

    |

  2. The unit of magnetic flux is

    Text Solution

    |

  3. Calculate the mean % error in five observations : 80.0,80.5,81.0,81...

    Text Solution

    |

  4. Calculate focal length of given lens if the magnification is -0.5.

    Text Solution

    |

  5. Tranformer rarr ideal rarr E(P) = 1000 V, I(P) = 50 A 200 V rarr 80...

    Text Solution

    |

  6. The magnetic flux has the dimension

    Text Solution

    |

  7. Which state of triply ionised Beryllium (Be^(+++)) the same orbital ra...

    Text Solution

    |

  8. In LCR series circuit source voltage is 120 volt and voltage in induct...

    Text Solution

    |

  9. Determine the pressure difference in tube of non-uniform cross sectio...

    Text Solution

    |

  10. mx^(2) -bx +k = 0 Find time after which of the energy will be come h...

    Text Solution

    |

  11. alpha particle is revolving in radius r with frequency f then find ...

    Text Solution

    |

  12. In given thermodynamic process determine efficiency of cycle . ...

    Text Solution

    |

  13. Determine coefficient of performance of given temperature limit. T(1...

    Text Solution

    |

  14. Assertion : A charge particle is released particle is released from re...

    Text Solution

    |

  15. Assertion : Water drop stick to glass surface. Reason : Water have p...

    Text Solution

    |

  16. Assertion : Photodiode current work in reverse bias. Reason : Change...

    Text Solution

    |

  17. Assertion : Coefficient of performance in refrigrator may be greater...

    Text Solution

    |

  18. Assertion : Binding energy increase with increases atomic mass number....

    Text Solution

    |

  19. Assertion : When electron and holes combine then this reaction is ex...

    Text Solution

    |

  20. Assertion : Binding energy per unit nucleon increase in atomic mass nu...

    Text Solution

    |