The following equations represent progressive transverse waves `z_(1) = A cos ( omega t - kx)` `z_(2) = A cos ( omega t + kx)` `z_(3) = A cos ( omega t + ky)` `z_(4) = A cos (2 omega t - 2 ky)` A stationary wave will be formed by superposingA. `z_(1) and z_(2)`B. `z_(1) and z_(4)`C. `z_(2) and z_(3)`D. `z_(3) and z_(4)`

The following equations represent progressive transverse waves `z_(1)

1.	The following equations represent progressive transverse waves `z_(1) = A cos ( omega t - kx)` `z_(2) = A cos ( omega t + kx)` `z_(3) = A cos ( omega t + ky)` `z_(4) = A cos (2 omega t - 2 ky)` A stationary wave will be formed by superposingA. `z_(1) and z_(2)`B. `z_(1) and z_(4)`C. `z_(2) and z_(3)`D. `z_(3) and z_(4)`
Answer» Correct Answer - A The direction of wave must be opposite and frequencies will be same then by superposition , standing wave formation takes place.

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