Home
Class 11
PHYSICS
A body radiates energy 5 W at a temperat...

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

A

410 W

B

81 W

C

405 W

D

200 W

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Newton s Law of Cooling)|37 Videos
  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Critical Thinking|36 Videos
  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Wein s law)|30 Videos
  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos
  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

Two spheres P and Q , of same colour having radii 8cm and 2cm are maintained at temperatures of 127^(@)C . If temperature is increased to 927^(@)C , then it radiates energy at the rate of

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

A black body radiates at the of W watts at a temperture T. If the temperature of the body is reduced to T//3 , it will radiate at the rate of (in Watts)

A black body radiates energy at the rate of E W//m at a high temperature TK . When the temperature is reduced to (T)/(2)K , the radiant energy will b

The temperature of a piece of iron is 27^(@)C and it is radiating energy at the rate of Q kWm^(-2) . If its temperature is raised to 151^(@)C , the rate of radiation of energy will become approximately

For a black body at temperature 527^(@)C , its radiating power is 60 W and temperature of surrounding is 127^(@)C . If the temperature of the black body iss changed to 927^(@)C , then its radiating power will be:-

A black body radiates energy at the rate of 1 xx 10 J // s xx m at temperature of 227 ^(@)C , The temperature to which it must be heated so that it radiates energy at rate of 1 xx 10 J//sm , is

A black body radiates energy at the rate of EW//m^(2) at a high temperature TK. When the temperature is reduces to half, the radiant energy will be

For a black body at temperature 727^(@)C , its rate of energy loss is 20 watt and temperature of surrounding is 227^(@)C . If temperature of black body is changed to 1227^(@)C then its rate of energy loss will be

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

ERRORLESS -TRANSMISSION OF HEAT-Radiation (Stefan s law)
  1. The area of a hole of heat furnace is 10^(-4)m^(2). It radiates 1.58xx...

    Text Solution

    |

  2. Two spheres P and Q , of same colour having radii 8cm and 2cm are mai...

    Text Solution

    |

  3. A body radiates energy 5 W at a temperature of 127^(@)C . If the tempe...

    Text Solution

    |

  4. A thin square steel plate with each side equal to 10 cm is heated by a...

    Text Solution

    |

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

    Text Solution

    |

  6. The energy emitted per second by a black body at 27^(@)C is 10 J. If t...

    Text Solution

    |

  7. The radiant energy from the Sun incident normally at the surface of ea...

    Text Solution

    |

  8. A spherical black body with a radius of 12cm radiates 450W power at 50...

    Text Solution

    |

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

    Text Solution

    |

  10. The ratio of energy of emitted radiation of a black body at 27^(@)C an...

    Text Solution

    |

  11. If the temperature of a black body be increased from 27^(@)C to 327^(@...

    Text Solution

    |

  12. The rectangular surface of area 8 cm xx 4 cm of a black body at temper...

    Text Solution

    |

  13. At temperature T , the power radiated by a body is Q watts . At the te...

    Text Solution

    |

  14. Two spherical black bodies of radii R(1) and R(2) and with surface tem...

    Text Solution

    |

  15. Temperature of a black body increases from 327^(@)C to 927^(@)C, the ...

    Text Solution

    |

  16. The original temperature of a black body is . 727^(@) C . The tempera...

    Text Solution

    |

  17. Two black metallic spheres of radius 4m, at 2000 K and 1m at 4000 K ...

    Text Solution

    |

  18. The energy spectrum f a black body exhibits a maximum around a wavelen...

    Text Solution

    |

  19. A black body is at a temperature 300 K. It emits energy at a rate, whi...

    Text Solution

    |

  20. The temperature of a body is increased by 50%. The amount of radiation...

    Text Solution

    |