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A-LevelPhysics Optics
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Aim: To examine characteristics of a converging lens and the images they create. Also to examine the focal length and how the focus point may be found and developing rules for locating an image via ray drawings and the intersection of rays. Chromatic aberration will also be explored and why it happens. Theory: Both lenses and mirrors have a principle axis, yet a lens has two focal points as opposed to a mirror that has only one. When considering converging lenses, the primary focal point PF can be found on the opposite side of the lens in regards to the...
located behind the lens and light rays are reflecting off it into our retina.

5. 1 - Place it against text and move it back until the text becomes clear and sharp, measure the distance from the text to the magnifying glass nb: Be sure to keep the distance between you eye and the magnifying glass the same. 2 - Direct a ray through the lens and project it on a screen, move the magnifying glass until the rays coming from the light source are directed to a single point. Measure the distance from the screen to the lens.

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