Home
Class 12
PHYSICS
A body radiates heat at the rate of 50 J...

A body radiates heat at the rate of 50 J/s at 300 K. when the same body is at 600 K then its rate of radiation of heat will be

A

100 J/s

B

200 J/s

C

400 J/s

D

800 J/s

Text Solution

Verified by Experts

The correct Answer is:
D
`(E_(2))/(E_(1))=((T_(2))/(T_(1)))^(4)=((600)/(300))^(4)=2^(4)`
`E_(2)=16xx50=800J//s`.
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

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 body radiates heat at the rate of 4cal//m^(2)//s , when its temperature is 227^(@)C . What is the heat radiated by the same body when its temperature is 727^(@)C ?

A body radiates heat at the rate of 5 cal/ m^(2)-s when its temperature is 227^(@)C . The heat radiated by the body when its temperature is 727^(@)C is

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 high temperature T K radiates energy at the rate of E W//m^(2) . When the temperature falls to (T//2) K , the radiated energy will be

A black body emit heat at the rate of 20 W , when its tempertaure is 227^(@)C Another black body emits heat at the rate of 15 W , when its temperature is 227^(@)C . Compare the area of the surface of the two bodies, if the surrounding is at NTP

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Stefans Law of Black Body Radiation)
  1. Two solid spheres of radii R(1) and R(2) are made of the same material...

    Text Solution

    |

  2. Two spheres P and Q of the same colour and having radii 4 cm and 2 cm ...

    Text Solution

    |

  3. A black body at a temperature of 127^(@)C radiates heat at the rate of...

    Text Solution

    |

  4. The ratio of loss of heat from a metal sphere at 327^(@)C to that of t...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  7. If the temperature of a hot body is raised would increased by

    Text Solution

    |

  8. A 60 w bulb has a filament temperature of 2000 K. what will be the wat...

    Text Solution

    |

  9. The surface of a house hold radiator has an emissivity of 0.5 and an a...

    Text Solution

    |

  10. A body emits Q cal/cm^(2) of radiation at temperature 227^(@)C. If the...

    Text Solution

    |

  11. The thermal capacities of two bodies A and B are in the ratio 1:4. if ...

    Text Solution

    |

  12. A black body is at a temperature of 527^(@)C, to radiate twice as much...

    Text Solution

    |

  13. If the temperature of a black body incresese from 7^(@)C to 287^(@)C ...

    Text Solution

    |

  14. Two solid sphere of copper have radii 10 cm and 8 cm respectively. The...

    Text Solution

    |

  15. In the above problem the ratio of the initial rate of fall of the temp...

    Text Solution

    |

  16. If the temperature of a body is reduced to half of in initial temperat...

    Text Solution

    |

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

    Text Solution

    |

  18. A small hole is made in a metallic hollow enclosure whose walls are ma...

    Text Solution

    |

  19. A body having a surface area of 50cm^2 radiates 300J of energy per min...

    Text Solution

    |

  20. Two objects have exactly the same shape. Object A has emissivity of 0....

    Text Solution

    |