Light waves are incident on three different double-slit arrangements. The results are shown in the three graphs (A-C) of relative light intensity versus angle. The angle is between a ray reaching a viewing screen at a given point and a ray at the central maximum. Select the correct descriptions of these interference patterns using the dropdown lists:
If the light incident on the slits is monochromatic (single wavelength), rank the slit arrangements in terms of slit spacing:
Narrowest pair of slits: [Select]
Widest pair of slits: [Select]
If three different wavelengths of light are incident on the same double-slit arrangement, rank the patterns in terms of the wavelength of light incident on it:
Shortest wavelength: [Select]
Longest wavelength: [Select]
If graph B corresponds to monochromatic green light, which pattern could be monochromatic red light?
[Select]
If the graphs are for three experiments: one with ultraviolet light, one with infrared light and one with visible light, which graph would correspond to a visible light wavelength? [Select]
If monochromatic light produces pattern B, which pattern could be observed if the frequency of light is increased? [Select]
