What is the process called when light waves are redirected in different directions?

• A. Reflection
• B. Refraction
• C. Scattering
• D. Diffusion

Answer: (C)

The process where light waves are redirected in different directions is called scattering. Scattering occurs when light encounters particles or irregularities in a medium, causing it to change its direction randomly. This interaction can happen with gases, liquids, and solids, causing the light to spread out and illuminate a larger area, or even lead to effects such as the blue color of the sky.

Reflection involves light bouncing off a surface at an angle but does not imply redirection in multiple directions. Refraction refers to the change in direction of light as it passes from one medium to another, which alters its speed but typically results in a single change in direction rather than a distribution of light in all directions. Diffusion describes the manner in which light is spread out when it passes through a semi-transparent medium but is not the technical term for the process of changing direction.

Hence, scattering is the most appropriate term for the redirection of light waves in various directions due to obstacles or particles in a medium.