The splitting up of white light into seven components as it enters a glass prism is called:

Correct option is A

The correct answer is (A) Dispersion of light.

• The process of splitting white light into its seven component colors as it passes through a prism is called dispersion of light.
• Dispersion occurs when white light passes through a prism, and the different colors (or wavelengths) of light spread out because they refract (bend) by different amounts.
• The result is the separation of light into its component colors, which is known as the spectrum of light. This process is called dispersion of light.
• Example: When sunlight passes through a glass prism, it splits into the seven colors of the rainbow: red, orange, yellow, green, blue, indigo, and violet.
  

Information Booster:

• Reflection of light: Reflection occurs when light bounces off a surface and changes direction. It does not result in the splitting of light into its components. Example: A mirror reflects light.
• Scattering of light: Scattering is the process in which light is redirected in many directions due to interactions with particles in the atmosphere or other mediums. This phenomenon is responsible for the blue color of the sky, but it does not split white light into colors. Example: Rayleigh scattering causes the sky to appear blue.
• Refraction of light: Refraction is the bending of light as it passes from one medium to another (e.g., from air to glass or water). While refraction is involved in dispersion, refraction alone does not cause the splitting of light into its components. Example: A pencil appears bent when partially submerged in water due to refraction.