Heat TransferHard
Question
A liquid in a beaker has temperature θ(t) at timet and θ0 is temperature of surroundings, thenaccording to Newton′s law of cooling thecorrect graph between loge (θ - θ0) and t is :-
Options
A.

B.

C.

D.

Solution
Rate of cooling 

On integrating
⇒ ln (θ - θ0) = - kt + C
⇒ correct answer will be (2)


On integrating

⇒ ln (θ - θ0) = - kt + C
⇒ correct answer will be (2)
Create a free account to view solution
View Solution FreeMore Heat Transfer Questions
A sphere a cube and a thin circular plate all made of same substance and all have same mass. These are heated to 200oC a...Two black bodies of absolute temp are 2000K & 3000 K respectively. Then the ratio of wavelengths corresponding to maximu...The temperature of two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal co...Three rods of copper, brass and steel are welded together to form a Y-shaped structure. Area of crossseciton of each rod...At 700 K temperatures the wavelength of maximum energy emitted by a body is 408 micron. If the temperature of body is in...