WAEC Physics 2013 Objective — Question 18
Question 18 of 50 from the West African Examinations Council (WAEC) Physics 2013 Objective paper, with the correct answer and a full explanation.
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Highly polished silvery surfaces are
- A. poor absorbers and poor emitters of radiationCorrect
- B. good absorbers and good emitters of radiation
- C. good absorbers but poor emitters of radiation
- D. poor absorbers but good emitters of radiation
Explanation
Highly polished silvery surfaces are poor absorbers and poor emitters of radiation; dull, black surfaces are better absorbers and emitters of radiation.
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