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Find the missing order for a double-slit Fraunhofer Diffraction pattern if the slit widths are 0.2 mm separated by 0.6 mm.

Correct Answer: 4th, 8th, 12th, …
We know, for interference maxima (e + d) sin θ = ±nλ and diffraction minima e sinθ = ±mλ. Therefore, (a+b)/a=n/m (0.2+0.6)/0.2=n/m n = 4 m As m = 1, 2, 3, …. Therefore, 4th, 8th, 12th, …. order interference maximum will be missing.

What is the variation in the pattern observed for single slit Fresnel diffraction than single slit Fraunhofer Diffraction?

If the separation between the two slits in Double Slit Fraunhofer Diffraction is changed, what change will be observed in the diffraction pattern?

In Double Slit Fraunhofer Diffraction, some orders of interference pattern are missing. It is called _____

In Double Slit Fraunhofer Diffraction, some orders of interference pattern are missing. It is called ____________

An automatic box was the property of the company. The box contained a slit of sufficient size to admit a coin and a projecting button. The box was so constructed that upon a coin being dropped into the slit and the button being pushed in, a chocolate would be ejected from the box. 'A' dropped into the slit a brass disc about the size and shape of the coin, and thereby obtained a chocolate. 'A' is

In x lenses are used in Fraunhofer diffraction and y in Fresnel Diffraction, x – y is ________

The diffraction patterns obtained in Fresnel and Fraunhofer Diffraction are fixed in position.

How shall the pattern change when white light is used in Fraunhofer Diffraction instead of monochromatic light?

A parallel beam of electrons of a given momentum pass through a screen S1 containing a slit and then produces a diffraction pattern on a screen S2 placed behind it. The width of the central maximum observed on the screen S2 can be increased by

Select a figure from amongst the four alternatives, which when placed in the blank space of figure (X) would complete the pattern.
Completion of Incomplete Pattern mcq question image