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Wave Optics

Question

In the double slit experiment, the pattern on the screen is actually a superposition of single slit diffraction from each slit and the double slit interference pattern in a double slit pattern. In what way is the diffraction from each slit related to the interference pattern in a double slit experiment? Explain.

Answer

The pattern shows a broader diffraction peak in which, there appear several fringes of smaller width, due to the double slit interference phenomenon.

The number of interference fringes depends upon the ratio of the distance between the two slits to the width of a slit.