MHT CET 2025 Physics question

In a single slit diffraction pattern, identify the incorrect statement from the following.

(A)The fringes have unequal width.
(B)The fringes have unequal intensity.
(C)The fringes have unequal width and unequal intensity.
(D)The fringes have equal width and equal intensity.Correct

Answer: (D)

Solution

In the single-slit diffraction pattern the central maximum is the brightest and its width () is twice the width of the secondary maxima (). The intensities of the secondary maxima fall off rapidly ( relative to the central maximum). So

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Question ID VK-102201