American Board of Opticianry (ABO) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for your ABO Exam with our comprehensive test platform. Engage with interactive questions, tips for success, and expert guidance to enhance your knowledge and confidence for the certification.

Start Multiple Choice Practice Test
Start Flash Cards

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!

Practice this question and more.

What portion of light on the visible spectrum corresponds to the wavelengths 450 nm to 495 nm?

  1. Blue

  2. Red

  3. Green

  4. Violet

The correct answer is: Blue

Light on the visible spectrum with wavelengths ranging from 450 nm to 495 nm corresponds to the color blue. Different colors in the visible spectrum are determined by the range of wavelengths they encompass. In this case, the range falls within the blue region, hence the correct answer is A. The other options (Red, Green, Violet) are not correct as they correspond to different ranges of wavelengths on the visible spectrum.

More Questions Like This