Two coherent waves are represented by $y_1 = a_1\, \cos ωt$ and $y_2 = a_2\, \cos(\frac{π}{2}-ωt)$. Their resultant intensity after interference will be
Answer & explanation
Correct answer: option 4
$y_1 = a_1\, \cos ωt;\,y_2 = a_2\, \cos(\frac{π}{2}-ωt)$
Since the two wave differ in phase by $\frac{p}{2}$
$y=a_1^2+a_2^2$