The ____ passes through the exact ____ of the lens. The ____ is an ____ line that “cuts” the lens in half. The ____ is the point where light rays ____ after refracting. Since light rays can ____ a lens, there is a focal point on each side of the lens. The distance from the vertical axis to the focal point is called the ____ (f). The point labeled ____ is ____ times the focal length.

Leaderboard

Visual style

Options

Switch template

Continue editing: ?