Final answer:
A prism made of polystyrene plastic can deflect light rays by bending them due to the properties of the material and the different wavelengths of light. This phenomenon, known as dispersion, causes different colors of light to bend by different amounts. The deflection of light rays can be illustrated schematically to show how the polystyrene prism bends the light ray.
Step-by-step explanation:
A prism made of polystyrene plastic can also deflect light rays. When light enters one face of the prism, it is refracted (bent) due to the properties of the material and the different wavelengths of light. This causes the different colors of light to bend by different amounts, a phenomenon known as dispersion. As a result, the light rays follow slightly different paths through the prism. The violet light is bent more than the red light. This deflection can be schematically depicted to illustrate how the light ray is bent by the polystyrene plastic prism.