Home
Class 12
PHYSICS
Four copper plates of the same dimension...

Four copper plates of the same dimensions are painted with red, green, white and black colours. All of them are heated upto a temperature of `300^(@)C` and then allowed to cool in the surrounding, which is at room temperature. Which plate would cool at the earliest?

A

Green

B

White

C

Black

D

Red

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 9|30 Videos

  • INTERFERENCE AND DIFFRACTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|20 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    MARVEL PUBLICATION|Exercise MCQ|195 Videos

Similar Questions

Explore conceptually related problems

A solid sphere, a cube and a plate, all are made of same material and all have same mass. These are heated to a temperature 100^@C and then allowed to cool at the temperature of room. Which of these will cool down first –

Three objects sphere , a cube and a circular plate of equal mass are constructed from same material . All of the three objects are initially heated to a temperature of 150^@C and then left to cool at room temperature. Will they all cool down at the same ? If not, which of them will cool faster and why ?

A solid sphere and a hollow sphere of the same material and size are heated to the same temperature and allowed to cool in the same surroundings. If the temperature difference between the surroundings and each sphere is T, then :

Three bodies A,B and C have equal areas which are painted red, yellow and black respectively. If they are at same temperature then

A body is heated to a temperature of 75^(@)C and is allowed to cool. If the temperature of the surrounding is 35^(@)C , then the temperature at which the rate of cooling will be exactly half of that initially will be

A sphere, a cube and a thin circular plate, all made of the same mass and finish are heated to a temperature of 200^(@)C . Which of these objects will cool slowest, when left in air at room temperature?

If a piece of metal is heated to temperature theta and the allowed to cool in a room which is at temperature theta_0 , the graph between the temperature T of the metal and time t will be closet to

A cube and a sphere (both solid) of same mass, same material are heated upto same temperature and then kept in same surrounding. Rate of cooling means rate of fall of temperature

MARVEL PUBLICATION-KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION-TEST YOUR GRASP - 9
  1. Four copper plates of the same dimensions are painted with red, green,...

    Text Solution

    |

  2. The velocities of 4 molecules are 4m/s, 5m/s, 6m/s and 2m/s respective...

    Text Solution

    |

  3. Oxygen and hydrogen gas are at same temperature and pressure. And the ...

    Text Solution

    |

  4. The mean free path of nitrogen molecules at 27^(@)C is 3xx10^(-7)m//s....

    Text Solution

    |

  5. The equation of state for 15 gram of oxygen at pressure P, volume V an...

    Text Solution

    |

  6. The rms velocity of the molecules of a gas at temperature T is 1200 m/...

    Text Solution

    |

  7. If atmospheric pressure P=1xx10^(5)N//m^(2)andR=8J//"mole"//""^(@)K, t...

    Text Solution

    |

  8. At what temperature is the K.E. Of a gas molecules half that of its va...

    Text Solution

    |

  9. Each molecule of a gas has F degrees of freedom . The ratio (C(p))/(C(...

    Text Solution

    |

  10. Argon gas is heated at constant volume through 1^(@)C. The heat suppli...

    Text Solution

    |

  11. C(v) denotes the molar specific heat of a gas at constant volume and g...

    Text Solution

    |

  12. One mole of a monoatomic ideal gas is mixed with one mole of a diato...

    Text Solution

    |

  13. Which one of the following is not true about the following thermodynam...

    Text Solution

    |

  14. During an adiabatic process, the pressure of gas is found to be propor...

    Text Solution

    |

  15. The difference between the principal specific heats of a gas is 300J/k...

    Text Solution

    |

  16. When the temperature of 4 moles of a gas was increased from 80^(@)C to...

    Text Solution

    |

  17. 100g of water is heated from 30^@C to 50^@C. Ignoring the slight expan...

    Text Solution

    |

  18. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

    Text Solution

    |

  19. In an ideal refrigerator, heat from inside at 280 K is transferred to ...

    Text Solution

    |

  20. Which one of the following statements is true in the case of radiation...

    Text Solution

    |

  21. A perfectly black sphere of diameter 0.2 m is in thermal equilibrium w...

    Text Solution

    |