Duration: 2:42

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If we observe the single slit Fraunhofer diffraction with
\( \mathrm{P} \) wavelength \( \lambda \) and slit width \( b \), the width of the central maxima

W is \( 2 \theta \). On decreasing the slit width for the same \( \lambda \) :
(A) \( \theta \) increases
(B) \( \theta \) remains unchanged
(C) \( \theta \) decreases
(D) \( \theta \) increases or decreases depending on the intensity of light
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