Home
Class 12
PHYSICS
Two spherical black bodies of radii R(1)...

Two spherical black bodies of radii `R_(1)` and `R_(2)` and with surface temperature `T_(1)` and `T_(2)` respectively radiate the same power. `R_(1)//R_(2)` must be equal to

A

`(T_1)/(T_2)`

B

`(T_2)/(T_1)`

C

`((T_1)/(T_2))^2`

D

`((T_2)/(T_1))^2`

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 and B are two satellite revolving around the earth in circular orbits with radii R_(A) and R_(B) . Their periods T_(A) and T_(B) are 8 h and 1 h respectively. Then the ratio of (R_(A)//R_(B)) is equal to

Two concentric circular loops of radii r_(1) and r_(2) carry clockwise and anticlockwise currents i_(1) and i_(2) . If the centre is a null point, i_(1)//i_(2) must be equal to

The figure shows a system of two concentric spheres of radii r_1 and r_2 are kept at temperature T_1 and T_2 , respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to

Two planets revolve round the sun with frequencies N_(1) and N_(2) revolutions per year. If their average orbital radii be R_(1) and R_(2) respectively, then R_(1)//R_(2) is equal to

The figure represents two concentric shells of radii R_(1) and R_(2) and masses M_(1) and M_(2) respectively. The gravitational field intensity at the point A at distance a (R_(1) lt a lt R_(2)) is

Two spherical nuclei have mass number 216 and 64 with their radii R_(1) and R_(2) respectively. The ratio, (R_(1))/(R_(2)) is equal to

Two charged spheres of radii R_(1) and R_(2) having equal surface charge density. The ratio of their potential is

Two Cu wires of radii R_(1) and R_(2) are such that (R_(1) gt R_(2)) . Then which of the following is true ?

TARGET PUBLICATION-KINETIC THEORY OF GASES AND RADIATION -Competitive thinking
  1. If the temperature of the sun were to increase form T to 2T and its ra...

    Text Solution

    |

  2. The dimensions of stefan 's constant are

    Text Solution

    |

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

    Text Solution

    |

  4. A black body radiates 20 W at temperature 227^(@)C. If temperature of ...

    Text Solution

    |

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

    Text Solution

    |

  6. Rate of loss of heat of two spheres at same temperature having radii i...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |