Light Quizzes & Trivia

If you’re reading this right now, you can thank light. Light is the very special part of the electromagnetic spectrum that’s visible to the eye – all the colors of the rainbow from red to violet. Besides its role in illuminating world, light plays an important role in physics, where we can define and quantify everything about light, from its wavelength to its frequency to its role in a vacuum.

Think you can explain the difference between reflection and refraction? Want to bet that you can correctly calculate the energy of light based on its frequency? Whether you’re a quantum physicist on the make or you still think light travels through a special magical ether to get to its destination, take our quiz to learn all there is to know about light!
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Sample multiple-choice questions for light and optics unit.

Questions: 15  |  Attempts: 10682   |  Last updated: Jan 6, 2021
  • Sample Question
    A light ray has an angle of incidence of 34º. The reflected ray will make what angle with the reflecting surface?

This will help you study for the light test on Wednesday!

Questions: 20  |  Attempts: 8002   |  Last updated: Dec 31, 2012
  • Sample Question
    Light is best described as a:

Questions: 11  |  Attempts: 1680   |  Last updated: Dec 24, 2018
  • Sample Question
    What is our main source of light?

Questions: 6  |  Attempts: 4582   |  Last updated: Feb 19, 2013
  • Sample Question
    Shadows are made with opaque material.

Questions: 10  |  Attempts: 7992   |  Last updated: Dec 9, 2020
  • Sample Question
    Do you feel like you have a higher purpose but can't put your finger on it?

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Light Questions & Answers

What is the critical angle for diamond (n = 2.42) submerged in water (n = 1.33)?
The answer to this is A. Diamonds are known to be very rare gems. There are people who would love to stock up on their jewelry that comes with diamonds because they know that these will sell well in the long run. There are some diamonds that do get s
What is the distance between the positions of the original and final images seen in the mirror if an object is placed 20 cm in front of a plane mirror and the mirror is moved 2 cm towards the...
As the object was initially placed 20 cm in front of the plane mirror, the image formed was 40 cm away from the original object. Now, when the mirror is moved 2 centimeters towards the object, the image also moves two towards the object. In this pers
What is the difference between Luminosity and Brightness?
Luminosity and Brightness are two terms that are talking about light. If you want to measure the amount of light being generated from a source of light, or you want to describe the effect of the light generated, you need to have the understanding of
What is the difference between Lite and Light?
There is no big difference between light and lite. Both words are used to describe materials that are not too heavy in terms of their composition. Light comes from the Greek word 'leukos' and in Latin, it is called 'lux'. Light simply means the illum
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