3. The amplitude of the sine wave in mask G is one half of the amplitude of the sine wave in mask D but distance d is the same. Predict how the diffraction pattern from mask G will differ from that of mask D. Record the diffraction pattern from mask G and resolve any discrepancies with your prediction. (Hint: Re-sketch the figure at right, except make the amplitude half as big while keeping the d the same and then sketch the resulting diffraction pattern.)