An example of a longitudinal wave is
A) a sound wave in air.
B) a wave on a rope.
C) a water wave.
D) a sound wave in a metal bar.
E) none of the above.
Correct Answer:
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Q93: In a plane wave,the wavefronts are
A)circular.
B)flat.
C)parallel.
D)perpendicular to
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A)one dimension.
B)two dimensions.
C)three dimensions.
D)four
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