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 Surface area
  • B I and II only
  • C II and IV only
  • D I,II and III
  • E I, II and IV
waec 2018physics

The correct answer is C. II and IV only

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

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