When a white light beam passes through a prism, it undergoes dispersion, which means it separates into its constituent colors due to the different wavelengths of each color. This phenomenon is called refraction.

The amount of deviation, or bending, experienced by each color of light depends on its wavelength. Shorter wavelengths, such as violet, are bent more than longer wavelengths, such as red. This is because the speed of light is slower in denser mediums, like water or glass, and shorter wavelengths are more strongly affected by this slower speed.

In the given scenario, when a white light beam passes through a hollow prism filled with water, the violet color light is deviated the most. Therefore, option 2, which states violet, is the correct answer for the color that suffers the maximum angle of deviation.

Option 1, red, is incorrect because red light has a longer wavelength and therefore experiences less bending. Option 3, green, is also incorrect as it falls between red and violet in terms of wavelength and experiences a medium amount of deviation. Option 4, which suggests that all the colors suffer the same amount of deviation, is also incorrect.