Two waves represented by y = a sin (ωt − kx) and y = a cos (ωt − kx) are superimposed. The resultant wave will have an amplitude
a
√2a
2a
0
The two waves are obviously at a phase difference of π2
so the resultant amplitudeA=√a2+a2+2.a.acosπ2=√2a
Two waves represented by y = a sin (wt − kx) and y = a cos (wt − kx) are superposed. The resultant wave will have an amplitude