Post-UTME Physics 2017 Objective — Question 15
Question 15 of 20 from the Post-UTME Screening (Post-UTME) Physics 2017 Objective paper, with the correct answer and a full explanation.
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Which of the following electromagnetic radiations has the longest wavelength?
- A. Ultra - violet rays
- B. Visible rays
- C. X - rays.
- D. Radio wavesCorrect
Explanation
Radio waves have by far the longest wavelength in the electromagnetic spectrum among those listed.
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