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10 Terms
what is the shape and symbol of a convex lens?
what is the purpose of lenses?
to refract light
what is the principal axis?
the ray of light that enters the lens along the normal line and isn’t refracted
what is the principal focus?
where all the rays refract and are focused on a point
what is the focal length in a convex lens?
the length from the centre of the lens to the principal focus
what affects the focal length in a convex lens?
the strength of the lens
what is the image described as if it is smaller than the object?
diminished
what is an image upside down of the object called?
inverted
what is a real image?
where the rays actually meet at a point
how do you describe an image that is larger than the object?
magnified