The top of the figure at right shows the diffraction pattern resulting from two slits of width a separated by a distance d when illuminated by a plane wave of light having wavelength lambda and intensity I. Each of the other patterns are formed when exactly one of the parameters (a, d, lambda, or I) is changed. For each figure identify the parameter that was changed and describe the features of the diffraction pattern that you used to identify the changed parameter. Parameter changed:_______. Explanation: Parameter changed:_______. Explanation: Parameter changed:_______. Explanation: