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
Verified Correct Answer: C.
Physical Principles & Numerical Solution
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
Source: Myschool Past Questions Archive (Record #49680)