Home
Class 11
PHYSICS
A body is in thermal equilibrium with su...

A body is in thermal equilibrium with surrounding. Absorptive power of the surface of the body is a `= 0.5`. E is the radiant energy incident in unit time on the surface of the body. How much energy propagates from its surface in unit time?

Text Solution

Verified by Experts

The correct Answer is:
E
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A hot body will radiate maximum energy if its surface is

" The potential energy of a body of mass "m" on the surface of earth is "

The coefficient of absorption and reflection of the surface of a body are 0. 75 and 0.20 respectively. If 200 calorie of radiant heat is incident on the surface of the body, then the beat absorbed is

A body weight 500 N on the surface of the earth. How much would it weigh half way below the surface of the earth

The ratio of the binding energies of a stationary body at height equal to the radius of the earth and on its surface is

If the weight of a body is 100 N, on the surface of the earth then its binding energy on the surface of the earth is, (R_(E)=6400km)

ARIHANT-HEAT TRANSFER-Heat Transfer
  1. A potato at initial temperature T(0) is placed inside a hot convection...

    Text Solution

    |

  2. What is emissivity of a perfectly reflecting surface?

    Text Solution

    |

  3. A body is in thermal equilibrium with surrounding. Absorptive power of...

    Text Solution

    |

  4. A copper sphere is maintained at 500 K temperature by connecting it to...

    Text Solution

    |

  5. Stefan’s contain (s) derives from other known con- stant of nature, vi...

    Text Solution

    |

  6. An iron ball is heated to 727^(@)C and it appears bright red. The plot...

    Text Solution

    |

  7. A solid cylinder and a sphere of same material are suspended in a room...

    Text Solution

    |

  8. A block body at temperature T radiates same amount of energy in the wa...

    Text Solution

    |

  9. Majority of radiation from the Sun is in visible and near infra-red (0...

    Text Solution

    |

  10. A metal ball of mass 1.0 kg is kept in a room at 15^(@)C. It is heated...

    Text Solution

    |

  11. A hot body is suspended inside a room that is maintained at a constant...

    Text Solution

    |

  12. Newton’s law of cooling says that the rate of cooling of a body is pro...

    Text Solution

    |

  13. “Blue hot is hotter than red hot”. Explain.

    Text Solution

    |

  14. A planet of radius r(0) is at a distance r from the sun (r gtgt r(0))....

    Text Solution

    |

  15. A star having radius R has a small planet revolving around it at a dis...

    Text Solution

    |

  16. A 20 mm diameter copper pipe is used to carry heated water. The extern...

    Text Solution

    |

  17. Solar constant, I(s) is defined as intensity of solar radiation incide...

    Text Solution

    |

  18. A tapering rod of length L has cross sectional radii of a and b(lt a) ...

    Text Solution

    |

  19. A thick cylindrical shell made of material of thermal conductivity k h...

    Text Solution

    |

  20. A double pan window used for insulating a room thermally from outside ...

    Text Solution

    |