Home
Class 11
PHYSICS
Ac cording to Newton's law of cooling, t...

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?

Text Solution

Verified by Experts

Ac cording to Newton's law of cooling,
`(d theta)/(dt) prop Delta theta`, so `n =1`.
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Short Answer Questions|162 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Long Answer questions|33 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Curiosity Questions|9 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Competiton Focus Jee Medical Entrance|18 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos

Similar Questions

Explore conceptually related problems

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

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 :

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.

PRADEEP-PROPERTIES OF BULK MATTER-Very short answer questions
  1. What is temperatrue gradient?

    Text Solution

    |

  2. Can the rate of loss of heat be the same for two liquids? Comment.

    Text Solution

    |

  3. Ac cording to Newton's law of cooling, the rate of cooling of a body i...

    Text Solution

    |

  4. Cooling curves are drawn for three liquids a,b,c, shown in fig. for wh...

    Text Solution

    |

  5. A good heat reflector is a poor emitter, why?

    Text Solution

    |

  6. Why are clear nights colder than cloudy nights ?

    Text Solution

    |

  7. Under which condition the rate of cooling is obeyed (i) under Newton's...

    Text Solution

    |

  8. The young's modulus for steel is much more then that for rubber. For t...

    Text Solution

    |

  9. Is stress a vector quantity ?

    Text Solution

    |

  10. Identical spring of steel and copper are equally stretched. On which, ...

    Text Solution

    |

  11. What is the value of Young's modulus for a perfectly rigid body?

    Text Solution

    |

  12. what is the Bulk modulus for a perfect rigin body ?

    Text Solution

    |

  13. Is viscosity a vector ?

    Text Solution

    |

  14. Is surface tension a vector ?

    Text Solution

    |

  15. Iceberg floats in water with part of it submerged. What is the fractio...

    Text Solution

    |

  16. A vessel filled with water is kept on a weighing pan and the scale adj...

    Text Solution

    |

  17. A cubical block of density rho is floating on the surface of water. Ou...

    Text Solution

    |

  18. Is the bulb of a thermoeter made of diathermic or adiabatic wall ?

    Text Solution

    |

  19. Why does a metal bar appear hotter then a wooden bar at the same tempe...

    Text Solution

    |

  20. Calculate the temperature which has same numberal value on Calsius and...

    Text Solution

    |