Focal Length Explained - Physics of Lenses
4:53
YouTubeWedgwood Tutors
Focal Length Explained - Physics of Lenses
This tutorial explains what is meant by the focal length of a lens and two factors which affect it. The focal length is the distance from the lens to the principle focus of the lens (where parallel rays converge for a convex lens). The two factors which affect the focal length of a lens are: - The refractive index of the lens material - The ...
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