WAEC - Physics (1992 - No. 31)
The angle of deviation of light of various colours passing through a glass prism decreases in the order of
blue orange and red
red, blue and orange
blue, red and orange
red, orange and blue
orange, blue and red
Explication
Upon passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet.