MCQ
For constructive interference, the phase difference (in radian) between the two waves should be
  • A
    $0, \frac{\pi}{2}, \pi$
  • $0,2 \pi, 4 \pi$,
  • C
    $\pi, 3 \pi, 5 \pi$,
  • D
    $\frac{\pi}{4}, \frac{\pi}{2}, \frac{3 \pi}{4}$

Answer

Correct option: B.
$0,2 \pi, 4 \pi$,
$0,2 \pi, 4 \pi, \ldots$

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