An object placed 30 cm in front of a converging lens forms an image 15 cm behind the lens. What are the focal length of the lens and the lateral magnification of the image?
Answer to relevant QuestionsA converging lens with a focal length of 20 cm is used to produce an image on a screen that is 2.0 m from the lens. What are the object distance and the lateral magnification of the image? A convex lens produces a real, inverted image of an object that is magnified 2.5 times when the object is 20 cm from the lens. What are the image distance and the focal length of the lens? An object is placed 80 cm from a screen. (a) At what point from the object should a converging lens with a focal length of 20 cm be placed so that it will produce a sharp image on the screen? (b) What is the image’s ...The human eye is a complex multiple-lens system. However, it can be approximated to an equivalent single converging lens with an average focal length about 1.7 cm when the eye is relaxed. If an eye is viewing a 2.0-m-tall ...An optometrist prescribes a corrective lens with a power of +1.5 D. The lens maker starts with a glass blank that has an index of refraction of 1.6 and a convex front surface whose radius of curvature is 20 cm. To what ...
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