JAMB Physics 2011 Objective — Question 20
Question 20 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.
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Which of the following types of waves needs a medium for preparation?
- A. A. Radio waves
- B. B. X-rays
- C. C. Sound wavesCorrect
- D. D. Light wave
Explanation
Sound waves are mechanical waves, which require a material medium for their propagation, unlike radio waves, X-rays and light, which are electromagnetic waves.
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