The intensity pattern of a single slit consists of a central bright maximum with alternating dark and bright fringes on either side, while the intensity pattern of a double slit consists of multiple bright fringes with decreasing intensity as you move away from the center.
The width of the slits determines the width of the central maximum and the spacing between fringes in both single and double slit patterns. A wider slit will result in a wider central maximum and wider spacing between fringes, while a narrower slit will result in a narrower central maximum and closer spacing between fringes.
This is due to the phenomenon of interference, where the waves from the two slits interfere constructively at the center and destructively at the fringes. This results in a decrease in intensity at the fringes compared to the central maximum.
Yes, the intensity pattern will change with the wavelength of light used. As the wavelength increases, the spacing between fringes in both single and double slit patterns will also increase. This is known as the diffraction limit.
The intensity pattern of a double slit can be manipulated by changing the distance between the slits, the distance between the slits and the screen, or the wavelength of light used. Altering these parameters will result in a different spacing and intensity pattern.