Home
Class 11
PHYSICS
Rate of emitted radiation energy from pe...

Rate of emitted radiation energy from perfect black body at 500 K is proportional to . . . .. .

A

`(500)^(4)`

B

`(500)^(3)`

C

`(500)^(2)`

D

500

Text Solution

Verified by Experts

The correct Answer is:
A
From Stefan - Boltzmann law,
`W=sigmaAT^(4)t`
`:.WpropT^(4)` (Other are constant)
`:.W prop(500)^(4)`
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    KUMAR PRAKASHAN|Exercise Section - F Question from Module (Sample questions for preparation of competitive exams)|18 Videos

  • THERMAL PROPERTIES OF MATTER

    KUMAR PRAKASHAN|Exercise Question Paper (Section - A) Answer following in one sentence : (Word limit of answer is 10) (Each question carries 1 mark)|6 Videos

  • THERMAL PROPERTIES OF MATTER

    KUMAR PRAKASHAN|Exercise Section - D NCERT Exemplar Solution (Long Answer Type Questions )|8 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    KUMAR PRAKASHAN|Exercise SECTION-F (SECTION-D) QUESTIONS PAPER|1 Videos

  • THERMODYANMICS

    KUMAR PRAKASHAN|Exercise Question Paper|11 Videos

Similar Questions

Explore conceptually related problems

Perfect black body should be black in color.

What is perfect black body ? Give examples.

The electron emitted in beta radiation originates from

Calculate wavelength of emitted radiation when electron transition from n=3 to n=2 ? This radiation belong to which region.

Two spheres of the same material have radii 1 m and 4 m and temperature 4000 K and 2000 K respectively. Ratio of the energy radiated per second by the first sphere to that by the second is . . . . . .

On which factor the properties of radiations of perfect black body depend ?

Two substances A and B have relation T_(A)=4T_(B) for their absolute zero temperature. The difference in their wavelength is 3.0mum when maximum radiation energy emit from them. Wavelength of B for maximum radiation energy is . . . . . .. mum .

With rate of "7 cal cm"^(-2)s^(-1) , radiations are emitted from the black body at 227^(@)C , the rate of emitted radiations at 727^(@)C will be . . . . . . .

Maximum wavelength of radiation from black body at 1640 K temp. is 1.75 mum . If moon is considered as perfect black body and maximum wavelength radiation from it is 14.35 mum , then what should be the temperature of moon ?

KUMAR PRAKASHAN-THERMAL PROPERTIES OF MATTER-Section - E Multiple Choice Questions (MCQs)
  1. Consider a compound slab consisting of two different materials having ...

    Text Solution

    |

  2. A black body emits radiations of maximum intensity at wavelength of 50...

    Text Solution

    |

  3. Rate of emitted radiation energy from perfect black body at 500 K is p...

    Text Solution

    |

  4. What will be the power incident normally on unit area of spherical sur...

    Text Solution

    |

  5. In new temperature scale W, freezing point of water is 39^(@)W and boi...

    Text Solution

    |

  6. Constant temperature of ends are T(1) and T(2) (where T(1)gtT(2)) for ...

    Text Solution

    |

  7. With rate of "7 cal cm"^(-2)s^(-1), radiations are emitted from the bl...

    Text Solution

    |

  8. Radius of a star acting like perfect black body is R, then at what tem...

    Text Solution

    |

  9. A stone of 0.36 m^(2) cross -sectional area and 0.1 m thickness has it...

    Text Solution

    |

  10. How much energy will be emitted from a furnace at 3000K temperature ac...

    Text Solution

    |

  11. Two spheres of the same material have radii 1 m and 4 m and temperatur...

    Text Solution

    |

  12. The radiation emitted by a star A is 10,000 times that of the Sun. If ...

    Text Solution

    |

  13. If the temperature of the Sun were to increase from T to 2T and its ra...

    Text Solution

    |

  14. Maximum wavelength of radiation from black body at 1640 K temp. is 1.7...

    Text Solution

    |

  15. A compound slab is made up two slabs. If thermal conductivity of their...

    Text Solution

    |

  16. Suppose the Sun expands so that its radius becomes 100 times its prese...

    Text Solution

    |

  17. Three bodies of black, gray and white colour are able to sustain upto ...

    Text Solution

    |

  18. Absorbing and emitting powers of a body are 10 and 8 respectively. The...

    Text Solution

    |

  19. By heating a iron part with flame, first it becomes red, then reddish ...

    Text Solution

    |

  20. By heating a iron part with flame, first it becomes red, then reddish ...

    Text Solution

    |