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
C. I, II and III
Explanation
The rate of cooling of liquid 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
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