In a single slit, Fraunhofer diffraction experiment, with a decrease in the width of the slit, the width of the central maximum

Question

In a single slit, Fraunhofer diffraction experiment, with a decrease in the width of the slit, the width of the central maximum, Remains the same, Increase, Decrease, Can be any of these depending on the intensity of the source

MARKS App · Accepted Answer

Width of the central maximum is independent of intensity of the source. Its width is given by β = 2 λ D d , where d = width of slit i.e., β ∝ 1 d ; hence as d decreases, β increases.

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