Which phenomenon describes light behaving like a wave?

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

Answer: (D)

Light behaving like a wave is most accurately described by the phenomenon of interference. Interference occurs when two or more waves overlap and combine to form a new wave pattern. This can happen when light waves from different sources meet, resulting in regions of constructive interference (where the waves add together) and destructive interference (where the waves cancel each other out). This characteristic of light demonstrates its wave-like properties, which are fundamental to understanding phenomena such as patterns created in double-slit experiments or the colors seen in soap bubbles.

While other options like reflection, refraction, and diffraction also illustrate wave behavior, they focus on different aspects. Reflection involves the bouncing of light waves off surfaces, refraction is the bending of light as it passes through different mediums, and diffraction involves the spreading out of waves when they pass through an opening or around obstacles. Interference specifically highlights the interactions of light waves, showcasing the wave nature of light most prominently.