What does the given equation: x = Asin(ky+wt+a) represent?(a) Wave travelling along positive x direction(b) Wave travelling along negative x direction(c) Wave travelling along positive y direction(d) Wave travelling along negative y directionThe question was posed to me during an interview for a job.My question is based upon Displacement Relation in a Progressive Wave in section Waves of Physics – Class 11

What does the given equation: x = Asin(ky+wt+a) represent?(a) Wave tra

1.	What does the given equation: x = Asin(ky+wt+a) represent?(a) Wave travelling along positive x direction(b) Wave travelling along negative x direction(c) Wave travelling along positive y direction(d) Wave travelling along negative y directionThe question was posed to me during an interview for a job.My question is based upon Displacement Relation in a Progressive Wave in section Waves of Physics – Class 11
Answer» RIGHT answer is (d) Wave travelling along negative y direction The explanation is: A way of looking at a travelling wave is CONSIDERING the direction in which a particular value of TRANSVERSE displacement moves.For the GIVEN equation x = Asin(ky+wt+a) we have to see the direction in which x moves.For eg: If we CONSIDER the amplitude A, for x =A as t increases, y should decrease.So, we can say that the wave propagates in the negative y direction.

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