Sound WavesHard
Question
The displacement of particles in a string stretched in the x-direction is represented by y. Among the following expressions for y, those describing wave motion is (are)
Options
A.cos kx sin ωt
B.k2x2 - ω2t2
C.cos2(kx + ωt)
D.cos(2x2 - ω2t2)
Solution
(a) and (c) options satisfy the condition;
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