Two waves of intensity ratio $1: 9$ cross each other at a point. The resultant intensities at the point, when $I_1(a)$ Waves are incoherent is $I_1(b)$ Waves are coherent is $I_2$ and differ in phase by $60^{\circ}$. If $\frac{I_1}{I_2}=\frac{10}{x}$ than $x$ =. . . . . . . . . . .
JEE MAIN 2024, Diffcult
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