In case of destructive interference Phase difference ϕ=180∘ or π So wave pair (i) and (ii) will produce destructive interference. Stationary or standing waves will produce by equations (iii) & (iv) as two waves travelling along the same line but in opposite direction.
Following are expressions for four plane simple harmonic waves (i) y_1=A cos 2 π (n_1 t+ x λ_1 ) (ii) y_2=A cos 2 π (n_1 t+ x λ_1+π ) (iii) y_3=A cos…
JEE Main 2012 — Physics Waves & Oscillations
2012mcqmedium
Following are expressions for four plane simple harmonic waves (i) y1=Acos2π(n1t+λ1x) (ii) y2=Acos2π(n1t+λ1x+π) (iii) y3=Acos2π(n2t+λ2x) (iv) y4=Acos2π(n2t−λ2x) The pairs of waves which will produce destructive interference and stationary waves respectively in a medium, are
Official previous-year question
Held on 7 May 2012 · Verified 6 Jul 2026.
Options
- A
(iii, iv), (i, ii)
- B
(i, iii), (ii, iv)
- C
(i, iv), (ii, iii)
- D
(i, ii), (iii, iv)
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