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JAMB Physics 2010 Question 23

Question 23

Heat Transfer

Which of the following has no effect on radiation?

  1. A.density
  2. B.temperature
  3. C.surface area
  4. D.nature of the surface
Show the answer and explanation

Answer: A (density)

Explanation

The rate of radiation depends on the body's temperature, its surface area and the nature of its surface (dull black radiates best), not on its density.