Which of the following statement(s) is/are true regarding the production and propagation of sound waves?
(i) Sound is produced by vibrating objects.
(ii) Sound waves do not require a material medium for their propagation.
(iii) Sound waves fall in the category of non-mechanical waves.
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A.
Both (ii) and (iii)
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B.
Only (ii)
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C.
Only (i)
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D.
Both (i) and (iii)
Correct Answer:
C. Only (i)
Explanation:
Sound is generated through the mechanical vibration of objects, which creates pressure waves in the surrounding environment. Because these waves are mechanical in nature, they rely on the compression and rarefaction of particles to travel, meaning they strictly require a physical medium like a solid, liquid, or gas for propagation. Unlike electromagnetic waves, sound cannot travel through a vacuum. Therefore, only the first statement is correct, as sound waves are mechanical waves that cannot function without a material medium.
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