Draw the intensity pattern for single slit diffraction and double slit interference. Hence, state two differences between interference and diffraction patterns.

Interference:Interference is a phenomenon in which two waves superimpose to form a resultant wave of greater, lower, or the same amplitude.Interference usually refers to the interaction of waves that are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency.Diffraction:Diffraction is the slight bending of light as it passes around the edge of an object. The amount of bending depends on the relative size of the wavelength of light to the size of the opening.In diffraction, they are not perfectly dark and the width of two fringe never be equal.