Home
Class 12
MATHS
According to Newton's law, rate of cooli...

According to Newton's law, rate of cooling is proportional to the difference between the temperature of the body and the temperature of the air. If the temperature of the air is `20^(@)C` and body cools for 20 min from `100^(@)C` to `60^(@)C` then the time it will take for it temperature to drop to `30^(@)` is

A

30 min

B

40 min

C

60 min

D

80 min

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DIFFERENTIAL EQUATION

    ARIHANT MATHS|Exercise Exercise (Single Option Correct Type Questions)|18 Videos

  • DIFFERENTIAL EQUATION

    ARIHANT MATHS|Exercise Exercise (More Than One Correct Option Type Questions)|13 Videos

  • DIFFERENTIAL EQUATION

    ARIHANT MATHS|Exercise Exercise For Session 4|10 Videos

  • DETERMINANTS

    ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|18 Videos

  • DIFFERENTIATION

    ARIHANT MATHS|Exercise Exercise For Session 10|4 Videos

Similar Questions

Explore conceptually related problems

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

The rate at which a substance cools in moving air is proportional to the difference between the temperatures of the substance and that of the air.If the temperature of the air is 290K and the substance cools from 370K to 330K in 10min, when will the temperature be 295K?

Newton’s law of cooling, holds good only if the temperature difference between the body and the surroundings is

Newton's law of cooling holds good provided the temperature difference between the body and the surroundings is .

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 :

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?