Out of the given four waves (1), (2), (3) and (4)
$y = a \sin(kx + \omega t)$ ......(1)
$y = a \sin(\omega t - kx)$ ......(2)
$y = a \cos(kx + \omega t)$ ......(3)
$y = a \cos(\omega t - kx)$ ......(4)
emitted by four different sources $S_1, S_2, S_3$ and S 4 respectively, interference phenomena would be observed in space under appropriate conditions when
Text Solution
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For interference, two waves must have a constant phase relation ship. Equation ‘1’ and ‘3’ and ‘2’ and ‘4’ have a constant phase relationship of $\frac{\pi}{2}$ out of two choices. Only one S 2 emitting ‘2’ and S 4 emitting ‘4’ is given so only option is correct.
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