Question

The component of white light that deviates the most on passing through a glass prism is?

• A. green
• B. violet
• C. blue
• D. red

Answer 1

Answer:

B. violet

• Violet light deviates the most because it has the shortest wavelength and therefore experiences the greatest refraction.

• Each beam of light, with its own particular wavelength (or colour), is delayed differently by the glass, As violet light has a shorter wavelength, it is delayed more than the longer wavelengths of red light.

• Consequently, violet light is bent the most while the red light is bent the least.