If wave y=Acos(ωt+kx) Is moving along x-axis, the shapes of a pulse – McqOptions

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1.	If wave y=Acos(ωt+kx) Is moving along x-axis, the shapes of a pulse at t=0 and t=2s.
A.	Are different
B.	Are same
C.	May not be the same
D.	Unpredictable
Answer» C. May not be the same

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