In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.
(a) State the colour seen (i) at X, and (ii) at Y.
(b) Why do different colours of white light bend through different angles with respect to the incident beam of light?
(a) i) The color seen at X is violet. ii) the color seen at Y is red.
(b) Different colors of white light bend through different angles with respect to the incident beam of light because every color have their own wave length, so they bend at different angles.