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Two coherent sources of intensities, $l_1$ and $I_2$ produce an interference pattern. The maximum intensity in the interference pattern will be
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Verified Answer
The correct answer is:
$\left(\sqrt{I_1}+\sqrt{I_2}\right)^2$
Resultant intensity $I_R=I_1+I_2+2 \sqrt{I_1 I_2} \cos \phi$
For maximum $I_R, \quad \phi=0^{\circ}$
$\Rightarrow I_R=I_1+I_2+2 \sqrt{I_1 I_2}=\left(\sqrt{I_1}+\sqrt{I_2}\right)^2$
For maximum $I_R, \quad \phi=0^{\circ}$
$\Rightarrow I_R=I_1+I_2+2 \sqrt{I_1 I_2}=\left(\sqrt{I_1}+\sqrt{I_2}\right)^2$
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