Home ยป When a beam of white light falls on a glass prism, the colour of light which will deviate least is Eye MCQs When a beam of white light falls on a glass prism, the colour of light which will deviate least is February 12, 2022 5 Views Q. When a beam of white light falls on a glass prism, the colour of light which will deviate least is: A. Violet B. Red C. Green D. Blue Answer: Red