Home
Class 11
PHYSICS
"Heat cannot by itself flow from a body ...

"Heat cannot by itself flow from a body at lower temperature to a body at higher temperature" is a statement or consequence of

A

Second law of thermodynamics

B

Conservation of momentum

C

Conservation of mass

D

First law of thermodynamics

Text Solution

Verified by Experts

The correct Answer is:
A
Second law of thermodynamics is the law of direction. Heat always transfers with negative temperature gradient.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ERRORLESS|Exercise PAST YEARS QUESTIONS|22 Videos

  • THERMODYNAMICS

    ERRORLESS|Exercise ASSERTION AND REASON|20 Videos

  • THERMODYNAMICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (ISOBARIC AND ISOCHORIC PROCESS)|10 Videos

  • SURFACE TENSION

    ERRORLESS|Exercise ASSERTION & REASON|11 Videos

  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS|Exercise ASSERTION & REASON|10 Videos

Similar Questions

Explore conceptually related problems

Heat energy flows from a body at ____ temperature to a body at _____ temperature.

Assertion : It is not possible for a system, unaided by an external agency to transfer heat from a body at lower temperature to another body at higher temperature. Reason : According to Clausius statement, “ No process is possible whose sole result is the transfer of heat from a cooled object to a hotter object

Assertion : First law of thermodynamics does not forbid flow of heat from lower temperature to higher temperature. Reason : Heat supplied to a system always equal to the increase in its internal energy.

ERRORLESS-THERMODYNAMICS-NCERT BASED QUESTIONS (HEAT ENGINE, REFRIGERATOR AND SECOND LAW OF THERMODYNAMICS)
  1. If heat Q is added reversibly to a system at temperature T and heat Q'...

    Text Solution

    |

  2. 200 cal of heat is given to a heat engine so that it rejects 150 cal o...

    Text Solution

    |

  3. "Heat cannot by itself flow from a body at lower temperature to a body...

    Text Solution

    |

  4. Choose the incorrect statement from the following: S1: The efficienc...

    Text Solution

    |

  5. In a cyclic process, work done by the system is

    Text Solution

    |

  6. Which of the following is a true statement

    Text Solution

    |

  7. The change in the entropy of a 1 mole of an ideal gas which went throu...

    Text Solution

    |

  8. When 1 kg of ice at 0^(@)C melts to water at 0^(@)C, the resulting cha...

    Text Solution

    |

  9. Find the change in the entropy in the following process 100 g of ice a...

    Text Solution

    |

  10. A container with rigid walls is covered with perfectly insulating mate...

    Text Solution

    |

  11. A carnot cycle has the reversible process in the following order:

    Text Solution

    |

  12. Refer to the Carnot cycle of an ideal gas shown in the figure. Let W(a...

    Text Solution

    |

  13. A Carnot engine working between 300 K and 600 K has work output of 800...

    Text Solution

    |

  14. If we consider solar system consisting of the earth and sun only as on...

    Text Solution

    |

  15. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |