Home
Class 12
PHYSICS
A Carnot engine efficiency is equal to 1...

A Carnot engine efficiency is equal to `1/7`. If the temperature of the sink is reduced by 65 K , the efficiency becomes `1/4`. The temperature of the source and the sink in the first case are respectively

A

620 K , 520 K

B

520 K , 606.67 K

C

606.67 K, 520 K

D

520 K, 610 K

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • JEE MOCK TEST 2

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

  • JEE MOCK TEST 21

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

The efficiency of a carnot engine is (1)/(6) . If the temperature of the sink is reduced by 62 K, the efficiency becomes (1)/(3) . The temperature of the source and the sink in the first case are respectively.

A reversible engine has an efficiency of 1/4 If the temperature of the sink is reduced by 58^(@) C, its efficiency becomes double. Calculate the temperature of the sink :

The efficiency of heat engine is 1/6 when the temperature of sink is reduced by 62^0 C the efficiency doubles. What is the temperature of source?

A cannot engine has efficiency (1)/(6) . If temperature of sink is decreased by 62^(@)C then its efficiency becomes (1)/(3) then the temperature of source and sink:

An engine has an efficiency of 1/6 . When the temperature of sink is reduced by 62^(@)C , its efficiency is doubled. Temperature of the source is

NTA MOCK TESTS-JEE MOCK TEST 20-PHYSICS
  1. The ammeter reading in the given circuit is

    Text Solution

    |

  2. A long thin magnet of moment M is bent into a semi circle. The decreas...

    Text Solution

    |

  3. The current gain in the common emitter mode of a transistor is 10. The...

    Text Solution

    |

  4. A particle of mass 1 kg and charge 1//3 mu C is projected toward a non...

    Text Solution

    |

  5. A charge is uniformly distributed inside a spherical body of radius r(...

    Text Solution

    |

  6. Two identical blocks of mass m are suspended from a beam balance whose...

    Text Solution

    |

  7. Two objects P and Q, travelling in the same direction start from rest....

    Text Solution

    |

  8. When a liquid in a glass vessel is heated, its apparent expansion coef...

    Text Solution

    |

  9. A Carnot engine efficiency is equal to 1/7. If the temperature of the ...

    Text Solution

    |

  10. An infinitely long hollow coducting cylinder with inner radius R/2 an...

    Text Solution

    |

  11. What would be the period of the free oscillations of the system shown ...

    Text Solution

    |

  12. A parallel beam of light is incident normally on a plane surface absor...

    Text Solution

    |

  13. One of the square faces of a metal slab of side 50 cm and thickness 2...

    Text Solution

    |

  14. A capillary tube is dipped in water to a depth and the water rises to ...

    Text Solution

    |

  15. A ray of light is incident normally on one of the faces of a prism of ...

    Text Solution

    |

  16. An installation consists of an electric motor which drives a water pum...

    Text Solution

    |

  17. Two loudspeakers L1 and L2 driven by a common oscillator and amplifier...

    Text Solution

    |

  18. In the Coolidage tube experiment, if the applied voltage is increased ...

    Text Solution

    |

  19. A sphere of mass m moving with velocity v collides head-on with anothe...

    Text Solution

    |

  20. Two unknown resistances are connected in two gaps of a meter-bridge. T...

    Text Solution

    |