Question

1. A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.
2. Mark the least deviated colour in your diagram.
3. Why do different coloured rays deviate differently in a prism?

Answer 1

1. Above diagram shows components of white light.

2. In above diagram, Least deviation colour has been marked.

3. Different coloured rays deviate differently in a prism because different colours travel at different speeds through the glass prism.