Question
Two coherent sources of intensity ratio $x^2$ interfere that in interference pattern
✓
Answer
$\frac{\mathrm{I}_{\max }-\mathrm{I}_{\min }}{\mathrm{I}_{\max }+\mathrm{I}_{\min }}=\frac{4 \sqrt{\mathrm{I}_{1} \mathrm{I}_{2}}}{2\left(\mathrm{I}_{1}+\mathrm{I}_{2}\right)}$
$=\frac{2 \sqrt{\mathrm{I}_{1} \mathrm{I}_{2}}}{\left(\mathrm{I}_{1}+\mathrm{I}_{2}\right)}$
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