Mini-Quiz: Basics of Optics

1. What is the most common way to create visible light?

   Ruby laserSorry, not correct. Try another button. Light-emitting diodeGood try, but not right. Select another answer. Light bulbThat is correct. You are becoming an Electro-Optics Champion.

2. What is usually used to change the direction of a beam of radiation?

   A mirrorCorrect. You are improving your processes. A Fresnel lensOops! Wrong answer. Re-read the question and try again. You can't change the direction of lightSorry, not correct. Try another button.

3. What is the most common use for light detectors?

   Recording an imageThat is correct. You are becoming an Electro-Optics Champion. Measuring the temperature of the sourceGood try, but not right. Select another answer. Reflecting light back to its sourceOops! Wrong answer. Re-read the question and try again.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.