Optics and refraction: focal point

Interactive  |  Interactive Lesson  |  RAR

Look at light rays magnified by a lens. Notice how light converges after it leaves the lens. Examine how curvature and thickness of a lens affect focal length. This learning object is one in a series of three objects. The series is also packaged as a combined learning object.
Students identify that light rays change direction when they pass through a lens.
Students demonstrate that the focal length of a lens is related to the curvature of its surfaces.

Curriculum Information

K to 12
Grade 7
Force Motion and Energy
Relate characteristics of light such as color and intensity to frequency and wavelength

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Education Services Australia
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