What phenomenon explains the bending of light as it passes through different mediums?

• A. Reflection
• B. Diffraction
• C. Refraction
• D. Dispersion

Answer: (C)

The bending of light as it passes through different media is explained by the phenomenon known as refraction. Refraction occurs because light travels at different speeds in different materials. When light enters a medium with a different optical density, such as from air into water, its speed changes, causing the light to bend. This bending results from the change in velocity as the light transitions between materials with varying refractive indices.

For instance, when light moves from air (less dense) into water (more dense), it slows down and shifts direction. This is why objects appear distorted or shifted when viewed through water. Refraction is fundamental in various applications, including the design of lenses in glasses, microscopes, and cameras, allowing us to focus light accurately and enhance our viewing experiences.

The other phenomena listed—reflection, diffraction, and dispersion—function differently. Reflection involves light bouncing off surfaces, diffraction refers to the bending of light around obstacles or through openings, and dispersion describes the separation of light into its component colors as it passes through a prism. Understanding refraction provides crucial insight into how we perceive light and its interaction with different materials.