The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called Newton's law of cooling.
121) According to Newton's law of cooling, the heat transfer from a hot body to a cold body is
Answer is:
directly proportional to the surface area and directly proportional to the difference of temperatures between the two bodies
Explanation:
Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers
Answer is:
superheated vapour
Answer is:
all of the above
Explanation:
Thermal conductivity of a material may be defined as the
* quantity of heat flowing in one second through a slab of the material of area 1 cm2 and thickness 1 cm when its faces differ in temperature by 1 Degree Centigrade
* quantity of heat flowing in one second through one cm of material when opposite faces are maintained at a temperature difference of 1 Degree Centigrade
* heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces