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

two

B

three

C

four

D

one

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    DISHA PUBLICATION|Exercise Exercise-2 (Concept Applicator)|28 Videos
  • THERMAL PROPERTIES OF MATTER

    DISHA PUBLICATION|Exercise Exercise-2 (Concept Applicator)|28 Videos
  • SYSTEM OF PARTICLES & ROTATIONAL MOTION

    DISHA PUBLICATION|Exercise EXERCISE-2 : CONCEPT APPLICATOR|28 Videos
  • THERMODYNAMICS

    DISHA PUBLICATION|Exercise EXERCISE -2 : CONCEPT APPLICATOR|29 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.

DISHA PUBLICATION-THERMAL PROPERTIES OF MATTER -Exercise-1: Concept Builder (Topicwise)
  1. Solar radiation emitted by sun resembles that emitted by a body at a t...

    Text Solution

    |

  2. A metal ball of surface area 200 cm^(2) and temperature 527^(@)C is ...

    Text Solution

    |

  3. Two rods of same length and transfer a given amount of heat 12 second,...

    Text Solution

    |

  4. Two cylinders P and Q have the same length and diameter and are made...

    Text Solution

    |

  5. Three very large plates of same area are kept parallel and close to ea...

    Text Solution

    |

  6. Two solid spheres of radii R(1) and R(2) are made of same material and...

    Text Solution

    |

  7. Two vessels of different materials are similar in size in every respec...

    Text Solution

    |

  8. Which of the following graphs correctly represents the relation betwe...

    Text Solution

    |

  9. A mass of 50g of water in a closed vessel, with surroundings at a cons...

    Text Solution

    |

  10. A block of steel heated to 100^(@)C is left in a room to cool. Which o...

    Text Solution

    |

  11. A body cools from 50.0^(@)C to 48^(@)C in 5s. How long will it take to...

    Text Solution

    |

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

    Text Solution

    |

  13. Consider two hot bodies B(1) and B(2) which have temperature 100^(@)"C...

    Text Solution

    |

  14. A body cools in a surrounding of constant temperature 30^@C Its heat c...

    Text Solution

    |

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

    Text Solution

    |

  16. If a body cools down from 80^(@) Cto 60^(@) C in 10 min when the tempe...

    Text Solution

    |

  17. A body cools from 50^(@)C to 40^(@)C in 5 min. The surroundings temper...

    Text Solution

    |

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

    Text Solution

    |

  19. State Newton's law of cooling and draw the graph showing cooling of ho...

    Text Solution

    |

  20. A hot body, obeying Newton's law of cooling is cooling down from its p...

    Text Solution

    |