According to Newton’s law of cooling, the heat energy lost per unit area of a body depends on the
I. Surface area
II. Nature of the surface
III. Temperature of the surface
IV. Excess temperature over the surroundings
-
A.
I and II only -
B.
II and IV only -
C.
I,II and III -
D.
I, II and IV
Correct Answer: Option C
Explanation
The rate of cooling of liduid according to Newton’s law of cooling depends on:
– Temperature of the liquid
– Temperature of the enclosure
– The area of the exposed surface
– The nature and extent of the surface of the containing vessel