Home
Class 12
PHYSICS
The amount of heat energy radiated per s...

The amount of heat energy radiated per second by a surface depends upon .

A

the nature of surface only

B

The area of the surface only

C

The difference of temperature between the surface and the surrounding only

D

The nature of surface, area of the surface and the temperature of body

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Newtons Law of Cooling)|40 Videos

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Question Given in MHT-CET)|79 Videos

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Kirchhoffs law of heat radiation)|19 Videos

  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    NIKITA PUBLICATION|Exercise MCQs (Sensitivity and accuracy of M.C.G.)|1 Videos

Similar Questions

Explore conceptually related problems

Calculate the amount of heat radiated per second by a body of surface area 12cm^(2) kept in thermal equilibrium in a room at temperature 20^(@)C The emissivity of the surface =0.80 and sigma=6.0xx10^(-s)Wm^(-2)K^(-4) .

Calculate the amount of heat radiated per second by a body of surface are 10 cm^(2) kept in thermal equilibrium in a roomat temperature 27^(@)C . The emissivity of the surface = 0.80 and Stefan's constant sigma ~= 6 xx 10^(-8) W//m^(2) K^(4)

A full radiator at 0^(@)C radiates energy at the rate of 3.2 xx 10^(4) erg cm^(-2) s^(-1) . Find (i) Stefan's constant and (ii) the amount of heat radiated per second by a sphere of radius 4 cm and at a temperature of 1000^(@)C .

Assume that the total surface area of a human body is 1-6m^(2) and that it radiates like an ideal radiator. Calculate the amount of energy radiates per second by the body if the body temperature is 37^(@)C . Stefan contant sigma is 6.0xx10^(-s)Wm^(-2)K^(-4) .

The amount of energy radiated by a body depends upon

The amount of heat enerrgy radiated per unit time per unit area by a body depends upon

The total amount of heat evolved or absorbed in a reaction depends upon the number of steps in which the reaction takes place.

The amount of heat energy radiated by a metal at temperature T is E. When the temperature is increased to 3T, energy radiated is

The law which relates the energy radiated per second by unit area of a body and fourth power of absolute temperature of body is

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Stefans Law of Black Body Radiation)
  1. The relation between rate of loss of heat from the body and its absolu...

    Text Solution

    |

  2. The unit of Stefan's constant sigma is

    Text Solution

    |

  3. The amount of heat energy radiated per second by a surface depends upo...

    Text Solution

    |

  4. If the rate of emission of radiation by a body at temperature TK is E ...

    Text Solution

    |

  5. Two sphere of the same material and radii 4 m and 1m respectively are ...

    Text Solution

    |

  6. The luminousity of a star is 10000 times that of the sun. if the surfa...

    Text Solution

    |

  7. A spherical black body of 5 cm radius is maintained at a temperature o...

    Text Solution

    |

  8. A black body at high temperature T K radiates energy at the rate of E ...

    Text Solution

    |

  9. A black body is at temperature of 500 K. It emits energy at rate which...

    Text Solution

    |

  10. A black body at temperature 227^(@)C radiates heat at the rate of 5 ca...

    Text Solution

    |

  11. If the temperature of the sun (black body) is doubled, the rate of ene...

    Text Solution

    |

  12. The temperature of a black body becomes half of its original temperatu...

    Text Solution

    |

  13. A body at 300^(@)C radiates 10^(5) watt/m^(2). If the sun radiates 10^...

    Text Solution

    |

  14. Two bodies A and B are placed in an evacuated vessel maintained at a t...

    Text Solution

    |

  15. A metal ball of surface area 200 cm^(2) and temperature 527^(@)C is ...

    Text Solution

    |

  16. A solid sphere cools at the rate of 2.8^(@)C per minute, when its temp...

    Text Solution

    |

  17. Ratio of rate of radiation of heat of body at 227^(@)C to that of the ...

    Text Solution

    |

  18. The ratio of the rate of radiation of heat by a perfectly black body a...

    Text Solution

    |

  19. A body radiates heat at the rate of 50 J/s at 300 K. when the same bod...

    Text Solution

    |

  20. The rate of emission of heat energy of an iron ball of radius 5 cm is ...

    Text Solution

    |