Home
Class 11
PHYSICS
Assertion: According to Newton's law of ...

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.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If the assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Newton's law of cooling, holds good only for small difference of temperature.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    A2Z|Exercise NEET Questions|47 Videos

  • THERMAL PROPERTIES OF MATTER

    A2Z|Exercise AIIMS Questions|28 Videos

  • THERMAL PROPERTIES OF MATTER

    A2Z|Exercise Problems Baesd On Mixed Concepts|18 Videos

  • ROTATIONAL DYNAMICS

    A2Z|Exercise Chapter Test|29 Videos

  • UNIT, DIMENSION AND ERROR ANALYSIS

    A2Z|Exercise Chapter Test|28 Videos

Similar Questions

Explore conceptually related problems

According to Newton's law of cooling, the rate of cooling of a body in air is proportional to the difference between the temperature of the body and the temperature of the surrounding air. If the air temperature is 20^(@)C and the body cools for 20 minutes from 140^(@)Cto80^(@)C , then the temperature will be 50^(@)C in

Which law of cooling holds for really larege temperature differences ?

Knowledge Check

  • According to Newton’s law of cooling. The rate of loss of heat, -"d"theta//dt of the body is

    A
    directly proportional to the sum of temperature of the body and Its surroundings
    B
    Inversely proportional to the sum of temperature of the body and Its surroundings
    C
    directly proportional to the difference of temperature of the body and the surroundings
    D
    Inversely proportional to the sum of temperature of the body and the surroundings

  • According to Newton's law of cooling ,the rate of cooling of a body is proportional to the

    A
    temperature of the body
    B
    temperature of the surrounding
    C
    difference of the temperature of the body and its surroungs
    D
    none of these

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

    A
    Temperature of the body
    B
    Temperature of the surrounding
    C
    Fourth power of the temperature of the body
    D
    Difference of the temperature of the body and the surroundings

    • Similar Questions

    Explore conceptually related problems

    According to law of mass action, the rate of a reaction is directly proportional to

    According to the law of mass action, the rate of an elementary reaction is directly proportional to the________of the reactants.

    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 in temperature of the body and its surroundings. Value of n is

    Newton's law of cooling applies when a body is losing heat to its surroundings by

    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

    Home
    Profile