Home
Class 12
PHYSICS
A black body at 227^(@)C radiates heat a...

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

60

B

50

C

112

D

80

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES AND RADIATION

    TARGET PUBLICATION|Exercise Evaluation test|18 Videos

  • KINETIC THEORY OF GASES AND RADIATION

    TARGET PUBLICATION|Exercise critical thinking|104 Videos

  • INTERFERENCE AND DIFFRACTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos

Similar Questions

Explore conceptually related problems

A black body at 227^(@)C radiates heat at the rate of 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 at ' 227^@ ' C radiates heat at the rate of ' 10 cal/cm^2s. At a temperature of '727^@' C the rate of heat radiated in same units will be

A black body at temperature 227^(@)C radiates heat at the rate of 5 cal/ cm^(2) , at a temperature of 27^(@)C , the rate of heat radiated per unit area per unit time in cal/ cm^(2) s, is

A black body at a temperature of 227^(@)C radiates heat energy at the rate of 5 cal/cm-sec. At a temperature of 727^(@)C , the rate of heat radiated per unit area in cal/cm will be

A black body of 127^(@)C radiates heat at the rate of 5cal//cm^(2) -second. At 527^(@)C , the rate of heat radiated in the same units will be

A black body at a temperature of 127^(@)C raidates heat at the rate of 1cal//cm xx sec . At a temperature of 527^(@)C the rate of heat radiation from the body in (cal//cmxx sec) will be

A black body, at a temperature of 227^@C , radiates heat at a rate of 20 cal m^(-2)s^(-1) . When its temperature is raised to 727^@C , the heat radiated by it in cal M^(-2)s^(-1) will be closest to

A black body at a temperature of 227^(@)C radius head at a rate of 20 cal m^(-2)s^(-1) . When its temperature is raised to 727^(@)C the radiated by it in cal m^(-2)s^(-1) will be closet

Two bodies hae temperatures as 227^(@)C and 727^(@)C ratio of heat radiated by them will be

TARGET PUBLICATION-KINETIC THEORY OF GASES AND RADIATION -Competitive thinking
  1. Rate of loss of heat of two spheres at same temperature having radii i...

    Text Solution

    |

  2. Rates of emission of heat by perfectly black body maintained at temper...

    Text Solution

    |

  3. A black body at 227^(@)C radiates heat at the rate of 7 cal cm^(-2) s...

    Text Solution

    |

  4. The temperature of two bodies A and B are respectively 727^(@)C and 32...

    Text Solution

    |

  5. A black body at a temperature of 227^(@)C radiates heat energy at the ...

    Text Solution

    |

  6. The surface of a black body is at a tempera ture 727^(@)C and its cros...

    Text Solution

    |

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

    Text Solution

    |

  8. A black body of emissive power 81 J/m^(2) s when it is at 300 K and or...

    Text Solution

    |

  9. A spherical black body with a radius of 12 cm radiates 450 watt power ...

    Text Solution

    |

  10. Parallel rays of light of intensity I=912 WM^-2 are incident on a sphe...

    Text Solution

    |

  11. A sphere at temperature 600 K is placed in an enviroment to temperatur...

    Text Solution

    |

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

    Text Solution

    |

  13. The sphere of radii 8 cm and 2 cm are cooling. Their temperatures are ...

    Text Solution

    |

  14. Assertion : Perspiration from human body helps in cooling the body. ...

    Text Solution

    |

  15. Ac cording to Newton's law of cooling, the rate of cooling of a body i...

    Text Solution

    |

  16. A bucket full of hot water cools from 75^(@)C to 70^(@)C in time T(1),...

    Text Solution

    |

  17. A liquid cools from 70 °C to 60 °C in 5 minutes. If the temperature of...

    Text Solution

    |

  18. An object is cooled from 75 ^(@)Cto 65^(@)C in 2 min in a room at 30^...

    Text Solution

    |

  19. A body cools from 100° C to 70° C in 8 second. If temperature of surro...

    Text Solution

    |

  20. A body cools from a temperature 3 T to 2 T in 10 minutes. The room tem...

    Text Solution

    |