wave-optics

Question: Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)

1) $a\sin \theta = \frac{\lambda }{2}$

2) $a\cos \theta = \frac{{3\lambda }}{2}$

3) $a\sin \theta = \lambda $

4) $a\sin \theta = \frac{{3\lambda }}{2}$

Solution:

Explanation: No Explanation

Diffraction of Light

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