A single slit with the direction to a point \( P \) on a distant screen as shown in the followin...
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0A single slit with the direction to a point \( P \) on a distant screen as shown in the following figure. At \( P \), the pattern
has its second minimum (from its central maximum). If \( X \) and \( Y \) are the edge of the slit, what is the path length difference \( (P X)-(P Y) \) ?
(A) \( \lambda / 2 \)
(B) \( \lambda \)
(C) \( 3 \lambda / 2 \)
(D) \( 2 \lambda \)
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