JAMB Physics 2010 Objective — Question 25
Question 25 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2010 Objective paper, with the correct answer and a full explanation.
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25. The sound of an electric bell dies down slowly when air is slowly pumped out from a bottle because A. sound cannot pass through the bottle B. sound can pass through a vacuum C. sound needs a material medium D. the wavelength of sound becomes greater in the bottle
- A. sound cannot pass through the bottle
- B. sound can pass through a vacuum
- C. sound needs a material medium
- D. the wavelength of sound becomes greater in the bottleCorrect
Explanation
Sound, being a mechanical wave, cannot travel through vacuum; it requires a material medium for its propagation.
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