Home
Class 12
PHYSICS
According to Newton's law of cooling, th...

According to Newton's law of cooling, the rate of cooling of a body is proportional to `(Delta theta)^n`, where `Delta theta` is the difference of the temperature of the body and the surroundings, and n is equal to

A

n = 0.5

B

n = 1

C

`n = 3//2`

D

n = 2

Text Solution

Verified by Experts

The correct Answer is:
B
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

According to Newton’s law of cooling, the rate of cooling of a body is proportional to (Deltatheta)^(n) , where Deltatheta is the difference of the temperature of the body and the surrounding, and n is equal to :

Ac cording to Newton's law of cooling, the rate of cooling of a body is proportional to (Delta theta)^(n) , where Delta theta is the difference of the temperature of the body and thae surrounding. What is the value of n out of 4,3,2,and 1?

According to ‘Newton’s Law of cooling’, the rate of cooling of a body is proportional to the

As difference of temperature of body and surroundings increases, rate of cooling

Newton’s law of cooling says that the rate of cooling of a body is proportional to the temperature difference between the body and its surrounding when the difference in temperature is small. (a) Will it be reasonable to assume that the rate of heating of a body is proportional to temperature difference between the surrounding and the body (for small difference in temperature) when the body is placed in a surrounding having higher temperature than the body? (b) Assuming that our assumption made in (a) is correct estimate the time required for a cup of cold coffee to gain temperature from 10^(@)C to 15^(@)C when it is kept in a room having temperature 25^(@)C . It was observed that the temperature of the cup increases from 5^(@)C to 10^(@)C in 4 min

Assertion: According to Newton's law of cooling, the rate of loss of heat, -dQ//dt of the body is directly proportional to the difference of temperature. Reason :This law holds for all type of temperature differences.

MARVEL PUBLICATION-KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION-TEST YOUR GRASP - 9
  1. According to Newton's law of cooling, the rate of cooling of a body is...

    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

    |