Home
Class 11
PHYSICS
Assuming the Sun to be a spherical body ...

Assuming the Sun to be a spherical body of radius R at a temperature of TK, evaluate the total radiant powered incident of Earth at a distance r from the sun
where `r_0` is the radius of the Earth and `sigma` is Stefan's constant.

A

`(r_0^2R^2sigmaT^4)/(4pir^2)`

B

`(4pir_0^2R^2sigmaT^4)/(r^2)`

C

`(pir_0^2R^2sigmaT^4)/(r^2)`

D

`(R^2sigmaT^4)/(r^2)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Thermal Properties of Matter

    SL ARORA|Exercise Exercise|449 Videos

  • System of particles & rotational Motion

    SL ARORA|Exercise EXERCISE|353 Videos

  • THERMODYNAMICS

    SL ARORA|Exercise Exercise|342 Videos

Similar Questions

Explore conceptually related problems

Assuming the Sun to be a spherical body of radius R at a temperature of TK, evalute the total radiant powerd incident of Earth at a distance r from the sun where r_0 is the radius of the Earth and sigma is Stefan's constant.

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

Assuming the sun to have a spherical outer surface of radius r radiating like a black body at temperature t^(@)C . The power received by a unit surface (normal to the incident rays) at a distance R from the centre of the sun is where sigma is the Stefan's constant.

The gravitational potential energy of a body at a distance r from the centre of the Earth is U where r gt R (radius of Earth). What is the weight of body at the point ?

Assuming the earth to be a sphere of uniform density, how much would a body of weight 200N, weigh at a distance of ( R)/(2) from the centre of the earth? [R is the radius of the earth.]

The distance of geostationary satellite from the centre of the earth (radius R) is nearest to

The period of revolution of a planet around the sun is 8 times that of the earth. If the mean distance of that planet from the sun is r, then mean distance of earth from the sun is

SL ARORA-Thermal Properties of Matter-Exercise
  1. If the temperature of the sun were to increase form T to 2T and its ra...

    Text Solution

    |

  2. Two spheres of the same material have radii 1m and 4m and temperatures...

    Text Solution

    |

  3. Assuming the Sun to be a spherical body of radius R at a temperature o...

    Text Solution

    |

  4. The earth radiates in the infra-red region of the spectrum. The spectr...

    Text Solution

    |

  5. A radiation of energy E falls normally on a perfectly reflecting surfa...

    Text Solution

    |

  6. A copper ball of mass 100 g is at a temperature T. it is dropped in a ...

    Text Solution

    |

  7. An external pressure P is applied on a cube at 0^(@)C so that it is eq...

    Text Solution

    |

  8. A pendulum clock loses 12s a day if the temperature is 40^@C and gains...

    Text Solution

    |

  9. A simple pendulum made of bob of mass m and a metallic wire of neglig...

    Text Solution

    |

  10. The quantity of heat required to change the unit mass of a solid subst...

    Text Solution

    |

  11. When a solid is heated, it turns directly into a gas. This process is ...

    Text Solution

    |

  12. A constant pressure air thermometer gave a reading of 47.5 units of vo...

    Text Solution

    |

  13. A non-conducting body floats in a liquid at 20^(@)C. with 2//3 of its ...

    Text Solution

    |

  14. Calorimeters are made of which of the following

    Text Solution

    |

  15. Hailstone at 0^@C from a height of 1 km on an insulating surface conve...

    Text Solution

    |

  16. Statement I: The bulb of one thermometer is spherical while that of th...

    Text Solution

    |

  17. On a cold morning, a metal surface will feel colder to touch than a wo...

    Text Solution

    |

  18. Assertion : Woollen clothes keep the body warm in winter Reason : Ai...

    Text Solution

    |

  19. Heat travels through vaccum by

    Text Solution

    |

  20. The amount of radiation emitted by a perfectly black body is proportio...

    Text Solution

    |