Experiment Lenses (AP)

Experiment Lenses (AP) - AP Physics Experiment Geometric...

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AP Physics Experiment – Geometric Optics (Lenses) Purpose To determine the focal length and nature of the images formed by a converging lens. To determine the focal length of a diverging lens. Procedures Part 1 – Converging Lens 1. Place the converging lens in the holder at the 50cm mark on the meter stick (optical bench) and the screen at approximately the 70cm mark. 2. Move the screen along the meter stick towards and away from the lens until the image of a distant object at least 100m away appears as small as possible on the screen. [Note that the image can be best obtained by placing your back to a window in a darkened lab and aiming the meter stick back over your shoulder while adjusting the screen to focus on a distant object.] 3. Measure and record the distance in centimeters between the lens and the screen as the focal length (F c ) of the lens. 4. Place the light source (lit candle or ray box) at or near the end of the meter stick. 5. Place the lens a distance greater than twice its measured focal length from the source. 6.
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Experiment Lenses (AP) - AP Physics Experiment Geometric...

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