Geometric Optics Tutorial 6 PDF

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Geometric Optics Tutorial 6 set by Dr Eilish McLoughlin based on the textbook University Physics (Young & Freeman)....

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Tutorial 6 - Geometric Optics Questions 1. A 1.2 cm tall object is 50 cm to the left of a converging lens of focal length 40.0 cm. A second converging lens of focal length 60.0 cm is located 300 cm to the right of the first lens along the same optic axis. Find the location and height of the image (I1) formed by the lens with the 40 cm focal length. If this image is the object for the 2nd lens, find the location and height of the 2nd image. 2. Two thin lenses with a focal length of magnitude 12.0 cm, the first diverging, the 2nd converging are located 9.00 cm apart. An object 2.50 mm tall is placed 20.0 cm to the left of the first diverging lens. How far from this first lens is the final image forrned? Is it real or virtual and what is its height? 3. Where is the near point of an eye for which a contact lens with a power of +2.75 diopters is prescribed? Where is the far point of an eye for which a contact lens with a power of -1.30 diopters is prescribed for distant vision? 4. Contact lenses are placed right on the eyeball, so the distance from the eye to the object is the same as the distance from the lens to that object. A certain person can see distant objects well, but the near point is 45.0 cm from the eye instead of 25.0 cm. Is this person near sighted or far sighted? What type of lens is necessary to correct his vision? If the correcting lenses will be contact lenses, what focal length is needed and what is the power in diopters? 5. Repeat the previous question for ordinary glasses where the lenses are 2.0 cm in front of the eyeball. 6. A certain microscope is provided with objectives that have focal lengths of 16 mm, 4 mm and 1.9n mm and with eye-pieces that have angular magnification of 5X and 10X. Each object forms an image 120 mm beyond its second focal point. Determine the largest and smallest over magnification obtainable. 7. The focal length of the eyepiece of a certain microscope is 18.0 mm. The focal length of the objective is 8.00 mm. The distance between objective and eye-piece is 19.7 and the final image is at infinity. What is the distance from the objective to the object being viewed? What is the magnitude of the linear magnification produced by the objective? What is the overall angular magnification of the microscope? 8. A telescope is constructed from two lenses with focal lengths of 95.0 cm and 15.0 cm, with the 95 cm lens being used as an objective. Both the object being viewed and the final image are at infinity. Find the angular magnification of the telescope. Find the height of a building 60m tall 3.0 km away. What is the angular size of the final image as viewed by an eye very close to the eyepiece....