115
Question
Velocity of sound in air is 332 m s−1. Its velocity in vacuum will be
(a) > 332 m s−1
(b) = 332 m s−1
(c) < 332 m s−1
(d) meaningless.
(a) > 332 m s−1
(b) = 332 m s−1
(c) < 332 m s−1
(d) meaningless.
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Solution
(d) meaningless
Sound wave is a mechanical wave; this means that it needs a medium to travel. Thus, its velocity in vacuum is meaningless.
Sound wave is a mechanical wave; this means that it needs a medium to travel. Thus, its velocity in vacuum is meaningless.
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