Home
Class 12
PHYSICS
A black body at a temperature of 227 ^@C...

A black body at a temperature of `227 ^@C` radiates heat at a rate of `5 cal//cm^2s`. At a temperature of `727 ^@C`, the rate of heat radiated per unit area will be

A

`80 cal//cm^2s`

B

`500 cal//cm^2s`

C

`100 cal//cm^2s`

D

`250 cal//cm^2s`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Kinetic Theory of Gases and Radiation

    CHETANA PUBLICATION|Exercise Exercise|110 Videos

  • Electrostatics

    CHETANA PUBLICATION|Exercise Exercise|73 Videos

  • Magnetic Fields due to Electric Current

    CHETANA PUBLICATION|Exercise Exercise|96 Videos

Similar Questions

Explore conceptually related problems

A black body at 227^(@)C radiates heat at the rate of 7 cal cm^(-2) s^(-1) . At a temperature of 727^(@)C , the rate of heat radiated in the same unit will be

A black body is at a temperature of 527^@C , to radiate twice as much energy per second its temperature must be increased to

A black body radiates 3 J/cm^2 s when its temperature is 127^@C .How much heat will be radiated /cm^2 s when its temperature is 527^@C ?

A spherical black body with a radius of 20 cm radiates 440 W power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be

A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be

A black body radiates 20 W at temperature 227^(@)C . If temperature of the black body is changed to 727^(@)C then its radiating power wil be

What happens to temperature of the body if it radiates more heat than it absorbs.

Liquid is filled in a vessel which is kept in a room with temperature 20^@C . When the temperature of the liquid is 80^@C , then it loses heat at the rate of 60 (cal)/s . What will be the rate of loss of heat when the temperature of the liquid is 40^@C ?

One black body at temperature T is surrounded by another black body at temperate T_1(T_1ltT) . At T, the radiation emitted by inner blackbody per unit area per second is proportional to

A body radiates energy 5 W at a temperature of 127^(@)C . If the temperature is increased to 927^(@)C , then it radiates energy at the rate of

CHETANA PUBLICATION-Kinetic Theory of Gases and Radiation-Exercise
  1. For an ideal gas

    Text Solution

    |

  2. When a black body is heated, it emits heat radiations of

    Text Solution

    |

  3. A black body at a temperature of 227 ^@C radiates heat at a rate of 5 ...

    Text Solution

    |

  4. If the temperature of the sun is doubled, the rate of energy received ...

    Text Solution

    |

  5. The dimensional formula for Stefan's constant is

    Text Solution

    |

  6. A sphere, a cube and a thin circular plate all made of the same materi...

    Text Solution

    |

  7. If a black body is heated from 27 ^@C to 927 ^@C, then the ratio of th...

    Text Solution

    |

  8. The ratio of the wavelength of emission corresponding to the maximum e...

    Text Solution

    |

  9. If the temperature of a black body is doubled, the frequency at which ...

    Text Solution

    |

  10. The phenomenon of black body radiation was explained satisfactorily by

    Text Solution

    |

  11. The maximum wavelength of radiation emitted at 1500K is 5mum. The maxi...

    Text Solution

    |

  12. The maximum wavelength of radiation emitted by a black body at 1227 ^@...

    Text Solution

    |

  13. The temperature of a black body is gradually increased. The colour of ...

    Text Solution

    |

  14. The surface temperature of a black body is 1200 K. What is the wavelen...

    Text Solution

    |

  15. The earth radiates in the infrared region of the spectrum. The wavelen...

    Text Solution

    |

  16. Select and write the most appropriate answer from the given alternativ...

    Text Solution

    |

  17. Select and write the most appropriate answer from the given alternativ...

    Text Solution

    |

  18. Select and write the most appropriate answer from the given alternativ...

    Text Solution

    |

  19. How many degrees of freedom are there for a monoatomic gas?

    Text Solution

    |

  20. State Mayer's Relation in terms of molar specific heats.

    Text Solution

    |