American Board of Opticianry (ABO) Practice Test

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Prepare for the ABO (American Board of Opticianry) Test with interactive flashcards and hundreds of multiple choice questions. Updated for 2024 to help you excel on exam day

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is defined as the colors that visible or white light is composed of?

Ray
All colors
Refraction
Photons

The correct answer is: All colors

The other options are incorrect because they do not accurately describe what visible or white light is composed of. Ray refers to a light beam, not colors. Refraction refers to the bending of light, not the colors of light combined. Photons are particles of electromagnetic radiation, but they are not colors themselves. Therefore, the only correct answer is choice B, all colors. Visible and white light is composed of all the colors of the visible spectrum, which are red, orange, yellow, green, blue, indigo, and violet. These colors can be seen when white light passes through a prism and is split into its individual parts, creating a rainbow.