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Question

Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
(iv) Sound travels faster than light.

A
i & ii only
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B
i, ii & iii only
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C
ii, iii & iv only
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D
i, ii & iv only
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Solution

The correct option is A i & ii only
(i)The vibrating object sets the particles of the medium around it into vibration.
(ii)Since, sound is a mechanical wave ,it needs a material medium for its propagation and cannot travel through vacuum.

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