The diagram illustrates the route taken by a ray of green light as it passes through a glass prism. The angle of deviation is the angle between the incident ray and the ray emerging from the prism. If white light is incident on the prism, it is split into the colours of the visible spectrum. What is the name of this effect, and which colour of light has the smallest angle of deviation?
- Adiffraction, red
- Bdiffraction, violet
- Cdispersion, red
- Ddispersion, violet