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

two

B

three

C

four

D

one

Text Solution

Verified by Experts

The correct Answer is:
D
(d) `-(dQ)/(dt) prop (Delta theta)`
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise JEE Main And Advanced|54 Videos

  • LAWS OF MOTION

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise JEE Main And Advanced|79 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.

SUNIL BATRA (41 YEARS IITJEE PHYSICS)-HEAT AND THERMODYNAMICS-JEE Main And Advanced
  1. A Carnot engine takes 3xx10^6cal. of heat from a reservoir at 62^@C, a...

    Text Solution

    |

  2. The earth radiates in the infra-red region of the spectrum. The spectr...

    Text Solution

    |

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

    Text Solution

    |

  4. One mole of ideal monoatomic gas (gamma=5//3) is mixed with one mole o...

    Text Solution

    |

  5. If the temperature of the sun were to increase form T to 2T and its ra...

    Text Solution

    |

  6. Which of the following statements is correct for any thermodynamic sys...

    Text Solution

    |

  7. Two thermally insulated vessel 1 and 2 are filled with air at temperat...

    Text Solution

    |

  8. The temperature of the two outer surfaces of a composite slab, consist...

    Text Solution

    |

  9. Which of the following is incorrect regarding the first law of thermod...

    Text Solution

    |

  10. The figure shows a system of two concentric spheres of radii r1 and r2...

    Text Solution

    |

  11. A system goes from A and B via two processes. I and II as shown in fig...

    Text Solution

    |

  12. The temperature -entropy diagram of a reversible engine cycle is given...

    Text Solution

    |

  13. A gaseous mixture consists of 16g of helium and 16 g of oxygen. The ra...

    Text Solution

    |

  14. Assuming the Sun to be a spherical body of radius R at a temperature o...

    Text Solution

    |

  15. Two rigid boxes containing different ideal gases are placed on a table...

    Text Solution

    |

  16. The work of 142kJ is performed in order to compress one kilo mole of g...

    Text Solution

    |

  17. When a system is taken from state i to state f along the path iaf, it ...

    Text Solution

    |

  18. A Carnot engine, having an efficiency of eta=1//10 as heat engine, is ...

    Text Solution

    |

  19. One end of a thermally insulated rod is kept at a temperature T1 and t...

    Text Solution

    |

  20. If C(P and C(v) denote the specific heats nitrogen per unite mass at c...

    Text Solution

    |