Home
Class 11
PHYSICS
Assertion : The radiation from the sun’s...

Assertion : The radiation from the sun’s surface varies as the fourth power of its absolute temperature.
Reason : The sun is not a black body.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true reason is false

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise ET Self Evaluation Test|23 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Graphical Questions|17 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

Surface temperature of Sun is

Assume that a planet radiates heat at a rate proportional to the fourth power of its surface temperature T and that the temperature of the planet is such that this loss is exactly compensated by the heat gained from the sun. Show that other things remaining the same, a planet's surface temperature will vary inversely as the square root of its distance from the sun.

Ulraviolet radiation from sun causes a reaction that produces:

The amount of thermal radiation energy emitted from the surface of a body is found to be proportional to the ........ power of the absolute temperature of the body.

A planet radiates heat at a rate proportional to the fourth power of its surface temperature T. If such a steady temperature of the planet is due to an exactly equal amount of heat received from the sun then which of the following statement is true?

The intensity of salr radiation just outside the earth's atmosphere is measured to be 1.4 kW//m^2 . If the radius of the sun 7xx10^8m , while the earth-sun distance is 150xx10^6km , then find i. the intensity of salr radiation at the surface of the sun. ii. the temperature at the surface of the sun assuming it to be a black body, iii. the most probable wavelength in solar radiation.

ERRORLESS -TRANSMISSION OF HEAT-Assertion & Reason
  1. Assertion : Bodies radiate heat at all temperatures. Reason : Ra...

    Text Solution

    |

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

    Text Solution

    |

  3. Assertion : The equivalent thermal conductivity of two plates of same ...

    Text Solution

    |

  4. Assertion : A hollow metallic closed container maintained at a uniform...

    Text Solution

    |

  5. Assertion : If the temperature of a star is doubled then the rate loss...

    Text Solution

    |

  6. Assertion : The radiation from the sun’s surface varies as the fourth ...

    Text Solution

    |

  7. Assertion : Blue star is at high temperature than red star. Reason :...

    Text Solution

    |

  8. Assertion : The S.I. unit of thermal conductivity is watt m ^(1)1 K^(1...

    Text Solution

    |

  9. Assertion : A brass tumbler feels much colder than a wooden tray on a ...

    Text Solution

    |

  10. Assertion: Like light radiation, thermal radiations are also electroma...

    Text Solution

    |

  11. Assertion : Snow is better insulator than ice. Reason : Snow con...

    Text Solution

    |

  12. Assertion : Water can be boiled inside satellite by convection. Re...

    Text Solution

    |

  13. Assertion : The absorbance of a perfect black body is unity. Reas...

    Text Solution

    |

  14. Assertion : A man would feel iron or wooden balls equally hot at 98.4°...

    Text Solution

    |

  15. Statement-1 : As temperature of a black body is raised, wavelenght cor...

    Text Solution

    |

  16. Assertion : All black coloured objects are considered black bodies. ...

    Text Solution

    |

  17. Assertion : Greater is the coefficient of thermal conductivity of a ma...

    Text Solution

    |

  18. Assertion : Radiation is the speediest mode of heat transfer. Rea...

    Text Solution

    |

  19. Assertion : Two thin blankets put together are warmer than a single bl...

    Text Solution

    |

  20. Assertion : Animals curl into a ball, when they feel very cold. Re...

    Text Solution

    |