Light of wave length \( \lambda \) is incident on slit of width \( d \). The resulting diffracti...
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0Light of wave length \( \lambda \) is incident on slit of width \( d \). The resulting diffraction pattern is observed on a screen placed at distance \( D \). The linear width of central maximum is equal to width of the slit, then \( D= \)
(a) \( \frac{d^{2}}{2 \lambda} \)
(b) \( \frac{2 \lambda^{2}}{d} \)
(c) \( \frac{d}{\lambda} \)
(d) \( \frac{2 \lambda}{d} \)
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