(a) With the help of labelled ray diagram show the path followed by a narrow beam of monochromatic light when it passes through a glass prism.
(b) What would happen if this beam is replaced by a narrow beam of white light ?
(a) The path followed by a narrow beam of monochromatic light when it passes through a glass prism is shown in the diagram below,
(b)If this beam is replaced by a narrow beam of white light, it will splict into sectrum of seven colours shown in the diagram below,