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Mechanical Engineering · Q150

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 150

Q150

According to Newton's law of cooling, the heat transfer from a hot body to a cold body is

A.
Directly proportional to the surface area
B.
Directly proportional to the difference of temperatures between the two bodies
C.
Either (A) or (B)
D.
Both (A) and (B)
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Newton's law of cooling states that the rate of heat loss of a body is directly proportional to the difference in the temperatures between the body and its surroundings.