A beam of light consisting of red, green and blue colours is incident on a right-angled prism as shown in the diagram below. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47, respectively.
The prism will:
separate all three colours from one another.
separate the blue colour path from the red and green colours.
separate the red colour path from the green and blue colours.
not separate the three colours at all.
