Rate of cooling of a body is 0.2^@C/min,...

Rate of cooling of a body is `0.2^@C/min`, when excess temperature is `20^@C`. The proportionality constant is

0.01/min

0.02/min

0.03/min

0.04/min

Text Solution

Verified by Experts

Topper's Solved these Questions

Sound
TARGET PUBLICATION|Exercise Exercise|248 Videos

Similar Questions

Explore conceptually related problems

A metal sphere cools at the rate of 1.6^@ C /min when its temperature is 70^@ C . At what rate will it cool when its temperature is 40^@ C. The temperature of surroundings is 30^@ C.

A metal sphere cools at the rate of 1.6^@C//min when itstemperature is 60^@C . At what rate will it cool when its temperature is 50^@C ? The temperature of surroundings is 30^@C .

In an experiment of Newton's law or cooling the graph between the rate of cooling of the body and excess of temperature with the surrounding is ______

A pan filled with hot food cools from 94^@C to 86^@C in 2 minutes. When the room temperature is 20^@C . How long will it take to cool from 74^@C to 66^@C ?

A metal sphere cools at the rate of 0.05^@ C/s when its temperature is 70^@ C and at the rate of 0.025^@ C /s when its temperature is 50^@ C . Determine the temperature of the surroundings and find the rate of cooling when the temperature of the metal sphere is 40^@C .

If the room temperature is 20 °C then the temperature on Fahrenheit scale is

A body cools at the rate of 1.5 °C/min when its temperature is 30 °C above that of the surrounding. At what temperature above the surrounding will it cool at the rate of 1 °C/min?

A body cools at the rate of 4^@C per minute when its temperature is 70^@C . What will be its rate of cooling when its temperature is 50^@C ? (Assume temperature of surrounding to be 30^@C )

A body cools in 7 minute from 60^@C to 40^@C . What time does it take to cool from 40^@C to 28^@C if the surrounding temperature is 10^@C ? [Assume that Newton's law of cooling is valid.]

A body cools from 51^@C to 50.9^@C in 10 sec. If surrounding temperature is 31^@C . The time taken to cool from 41^@C to 40.9^@C will be

TARGET PUBLICATION-Thermal Properties of Matter-Exercise

A body cools in 7 minute from 60^@C to 40^@C. What time does it take t...
Text Solution
|
A body cools from 50^@C to 49.9^@C in 5 s. How long will it take to co...
Text Solution
|
Rate of cooling of a body is 0.2^@C/min, when excess temperature is 20...
Text Solution
|
Hot water cools from 60^@C to 50^@C in the first 10 minute and to 42^@...
Text Solution
|
Steel rods are used in RCC rootings because
Text Solution
|
Which of the following graph represents the relation tf= 9/5 tc +32?
Text Solution
|
A cylindrical rod with one end in a steam chamber and the other and in...
Text Solution
|
A plate made up of anisotropic material is circular in shape at temper...
Text Solution
|
Four identical calorimeters painted in different colors, are heated to...
Text Solution
|
When a body has the same temperature as that of its surroundings
Text Solution
|
For cooking the food, which of the following type of utensil is most s...
Text Solution
|
Two circular dises A and B with equal radii are blackened. These are b...
Text Solution
|
It is known that wax contracts on solidification. If molten wax is tak...
Text Solution
|
A substance of mass m kg requires a power input of P watts to remain i...
Text Solution
|
The freezing point of the liquid decreases when pressure is increased,...
Text Solution
|
Two thin blankets keep more hotness than one blanket of thickness equa...
Text Solution
|
An ideal gas is expanding such that PT^2 = constant. The coefficient o...
Text Solution
|
An ice box used for keeping cold eatables has a total wall area of 1 m...
Text Solution
|
A metal ball immersed in alcohol weighs W1 at 0^@C and W2 at 59^@C. Th...
Text Solution
|
For any given scale X, the ice point is 40^@ and the steam point is 12...
Text Solution
|