Question

Consider the three waves z₁, z₂ and z₃ as
z₁ = A sin (kx – ⍵t)
z₂ = A sin (kx + ⍵t)
z₃ = A sin (ky – ⍵t)
Which of the following represents a standing wave?
(a) z₁ + z₂ (b) z₂ + z₃
(c) z₃ + z₁ (d) z1 + z₂ + z₃

Answer 1

Answer:

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Explanation:

option d

Answer 2

(d) z1 + z₂ + z₃

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