If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit 1: Light – reflection & refraction

1,700 possible mastery points

About this unit

When light travels from one medium to another (like air to glass, or glass to water), it does three things. Some of it bounces off, some of it goes through, and the rest of it is absorbed. In this chapter, we will explore the first two. We will explore what rules govern them, their technical names and then apply these rules to study the beautiful world of curved mirrors and lenses.
Level up on the above skills and collect up to 320 Mastery points
Level up on the above skills and collect up to 320 Mastery points
Level up on the above skills and collect up to 400 Mastery points

Practice

Level up on the above skills and collect up to 320 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 1700 Mastery points!