[" 1.What is meant by spectrum of white light? How can we recombine the components of white "],[" light after a prism has separated them? Draw a diagram to illustrate it."]

Why do different colours get separated when a white light passes through a prism ? How can we recombine the components of white light after a prism has separated them ? Explain with the help of a figure.

What is meant by dispersion of white light ? Describe the formation of rainbow in the sky with the help of a diagram.

What is meant by dispersion of white light ? Describe the formation of rainbow in the sky with the help of a diagram.

In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of prism is :