In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of a prism is:
a) violet
(b) yellow
(c) red
(d) blue
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of a prism is:
a) violet
(b) yellow
(c) red
(d) blue

The colour red is found at the extreme end of a prism, opposite the base.