Home
Class 11
PHYSICS
A hot and a cold body are kept in vacuum...

A hot and a cold body are kept in vacuum separated from each other. Which of the following cause decrease in temperature of the hot body

A

Radiation

B

convection

C

Conduction

D

Temperature

Text Solution

Verified by Experts

The correct Answer is:
A
Radiation occurs without any medium.
Promotional Banner

Topper's Solved these Questions

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Taking it together|47 Videos

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Assertion and reason|17 Videos

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Check points 16.3|20 Videos

  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY|Exercise Level 2 Subjective|14 Videos

  • CENTRE OF MASS

    DC PANDEY|Exercise Medical entrances gallery|27 Videos

Similar Questions

Explore conceptually related problems

A hot and a cold body are kept in vacuurn separated from each other. Which of the following causes decrease in temperature of the hot body?

Which of the following elements does NOT react with cold and hot water /

Efficiency of an engine is 0.4, when temperature of its sink ( cold body) is 300 K. What id the temperature of the hot body? Find its efficiency, if the temperature of the hot body is kept unchanged, while temperature of the sink (cold body) is lowered by 50 K. Treat it as reversible engine).

A hot liquid is kept in a big room. Its temperature is plotted as a function of time. Which of the following curves may represent the plot?

Which of the following is a relative measure or indication of hotness or coldness?

A cooling curve is plotted between the temperature of a hot body and time. Which of the following is not true for the cooling curve?

Below the skin, the fat is the form of Or Which of the following helps in maintaining body hot

DC PANDEY-CALORIMETRY AND HEAT TRANSFER-Check points 16.4
  1. Why are two thin blankets are warmer than a single blanket of double t...

    Text Solution

    |

  2. One likes to sit under sunshine in winter seasons, because

    Text Solution

    |

  3. A hot and a cold body are kept in vacuum separated from each other. Wh...

    Text Solution

    |

  4. A body, which emits radiations of all possible wavelengths, is known a...

    Text Solution

    |

  5. Distribution of energy in the spectrum of a black body can be correctl...

    Text Solution

    |

  6. Which of the following law states that "good absorbers of heat are goo...

    Text Solution

    |

  7. The ratio of the pressure power to the absorption power of all substan...

    Text Solution

    |

  8. If between wavelength lambda andlambda + dlambda, e(lambda) and a(lamb...

    Text Solution

    |

  9. There is a black spot on a body. If the body is heated and carried in ...

    Text Solution

    |

  10. In MKS system, Stefan's constant is denoted by sigma. In CGS system mu...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  13. A sphere has a surface area of 1.0 m^(2) and a temperature of 400 K an...

    Text Solution

    |

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

    Text Solution

    |

  15. The area of a hole of heat furnace is 10^(-4)m^(2). It radiates 1.58xx...

    Text Solution

    |

  16. If a body cools down from 80^(@) Cto 60^(@) C in 10 min when the tempe...

    Text Solution

    |

  17. A block of metal is heated to a temperature much higher than the room ...

    Text Solution

    |

  18. If wavelengths of maximum intensity of radiations emitted by the sun a...

    Text Solution

    |

  19. The maximum wavelength of radiation emitted at 200 K is 4 μm. What wil...

    Text Solution

    |

  20. The maximum energy in thermal radiation from a source occurs at the wa...

    Text Solution

    |