Certified Ophthalmic Assistant Practice Exam

Question: 1 / 400

Bending of light is called

reflection

diffraction

dispersion

refraction

Bending of light is called refraction. Refraction is the change in direction of light as it passes from one medium to another. This change in direction is caused by the change in speed of light as it travels through different substances with different refractive indices. Reflection, on the other hand, is the bouncing back of light when it hits a surface. Diffraction is the bending of light waves around obstacles, and dispersion is the separation of light into its constituent colors, as seen in a rainbow.

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