Two slits in Young's experiment have widths in the ratio 1 : 25. The ratio of intensity at the maxima and minima in the interference pattern, ${{{I_{max}}} \over {{I_{min}}}}$ is
${{49} \over {121}}$
${4 \over 9}$
${9 \over 4}$
${{121} \over {49}}$
Solution
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