<p>It’s meant for the AP B exam, but there is a lot of conceptual stuff (which isn’t obvious) that’s likely to appear on the subject test as well. There aren’t many formulas in here, but lots of info to help with concepts.</p>
<p>note: you can ignore stuff about fluids, as that’s only on the AP exam</p>
<p>you know those problems where a bird is looking down at the water and a fish is there but its real position is different than what the bird sees?</p>
<p>Index of refraction.
Since water is denser than air, the light ray bends toward the normal (FAST - faster away, slower toward). The fish would appear to be closer than it actually is.</p>