The following equations represent progressive transverse waves Z1=Acos(ω t−kx), Z2=Acos(ω t+kx), Z3=Acos(ω t+ky) and Z4=Acos(2ω t−2ky). A stationary wave will be formed by superposing
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a
Z1 and Z2
b
Z1 and Z4
c
Z2 and Z3
d
Z3 and Z4
answer is A.
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Detailed Solution
When two waves of equal frequency and travelling in opposite direction superimpose, then the stationary wave is produced. Hence Z1 and Z2 produces stationary wave.