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Q. The fringes produced in diffraction patterns _____.

NTA AbhyasNTA Abhyas 2022

Solution:

In diffraction pattern minima are obtained at angles $\theta_n$
Given by: $d \sin \theta_n=n \lambda$
Because of sinusoidal dependence the fringe widths are not equal.
In single slit diffraction pattern, central maxima is double the fringe width.