In the given figure, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism it produces a spectrum XY on a screen

In the given figure, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism it produces a spectrum XY on a screen.

  1. State the colour seen at X and Y.
  2. Why do different colours of white light bend through different angles with respect to the incident beam of light?
    image

Answer:

  1. X — Violet Y — Red
  2. Different colours of white light bend through different angles with respect to the incident beam of light due to difference in speed of light of different wavelengths.

can X be blue also?as it also deviates the most.