Step 1: Understand dispersion of light through a prism.
When white light passes through a glass prism, it splits into its constituent colors due to different degrees of refraction. This phenomenon is called
dispersion.
Step 2: Know the order of deviation.
The extent of deviation depends on the wavelength:
-
Violet has the
shortest wavelength and is deviated the most.
-
Red has the
longest wavelength and is deviated the least.
Step 3: Conclude based on deviation.
Hence,
violet light is deviated the most when white light passes through a prism.