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Question 3
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 slower than light.

(a) i, ii and iv only
(b) i and ii only
(c) i, ii and iii only
(d) ii, iii and iv only


Solution

The answer is (a).
The correct statements are;

Sound is produced by vibrations.
Sound requires a medium for propagation.

Sound travels slower than light.

 

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