Home
Class 11
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

One

B

Two

C

Three

D

Four

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Critical Thinking|36 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Graphical Questions|17 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Stefan s law)|56 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

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.

ERRORLESS -TRANSMISSION OF HEAT-Radiation (Newton s Law of Cooling)
  1. A body cools from 50^@C to 49^@C in 5 s. How long will it take to cool...

    Text Solution

    |

  2. A container contains hot water at 100^(@)C. If in time T(1) temperatur...

    Text Solution

    |

  3. Hot water kept in a beaker placed in a room cools from 70^(@)C to 60°...

    Text Solution

    |

  4. Newton’s law of cooling, holds good only if the temperature difference...

    Text Solution

    |

  5. In a room where the temperature is 30^(@)C, a body cools from 61^(@)C ...

    Text Solution

    |

  6. According to ‘Newton’s Law of cooling’, the rate of cooling of a body ...

    Text Solution

    |

  7. A body cools in 7 minutes from 60^(@)C to 40^(@)C What time (in minut...

    Text Solution

    |

  8. A body takes 5 minutes for cooling from 50^(@)C to 40^(@)C Its temp...

    Text Solution

    |

  9. The temperature of a body falls from 50^(@)C to 40^(@)C in 10 minute...

    Text Solution

    |

  10. It takes 10 minutes to cool a liquid from 61^(@)C to 59^(@)C. If room ...

    Text Solution

    |

  11. A calorimeter of mass 0.2 kg and specific heat 900 J//kg-K. Containing...

    Text Solution

    |

  12. According to Newton's law of cooling, the rate of cooling of a body is...

    Text Solution

    |

  13. A body initially at 80^(@)C cools to 64^(@)C in 5 minutes and to 52^(@...

    Text Solution

    |

  14. A liquid cools from 50^(@)C to 45^(@)C in 5 minutes and from 45^(@)C ...

    Text Solution

    |

  15. A cup of tea cools from 65.5^@C to 62.55^@C in one minute in a room at...

    Text Solution

    |

  16. A body takes 10 min to cool douwn from 62^@C to 50^@C. If the temperat...

    Text Solution

    |

  17. A body takes 5 minutes to cool from 90^(@)C to 60^(@)C . If the temper...

    Text Solution

    |

  18. A body is cooled in 2 min n a room at temperature of 30^@C from 75^@C ...

    Text Solution

    |

  19. A liquid takes 5 minutes to cool from 80^@C to 50^@C . How much time w...

    Text Solution

    |

  20. A cane is taken out from a refrigerator at 0^(@)"C". The atmospheric t...

    Text Solution

    |