Which is refracted most by a prism : red light or violet light ? Explain why?

Describe how you could demonstrate that white light is composed of a number of colors.

How could you show that the colours of the spectrum combine to give white light ?

Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark (i) incident ray (ii) emergent ray, and (iii) angle of deviation.

What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?