wave-optics

Question: The width of the nth HPZ will be

1) $\sqrt {nb\lambda } $

2) $\sqrt {b\lambda } \,[\sqrt n - \sqrt {n - 1} ]$

3) $(\sqrt n \, - \,\sqrt {n - 1} )$

4) $\frac{{\sqrt {b\lambda } }}{{[\sqrt n \, - \sqrt {n - 1} ]}}$

Solution:

Explanation: No Explanation

Diffraction of Light

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