A person is prescribed with contact lenses that have powers of – 3.0 D. What type of lenses are these? What is the lenses’ focal length?
Answer to relevant QuestionsAn object is placed 10 cm in front of a converging lens with a focal length of 18 cm. What are (a) The lateral magnification and (b) The angular magnification? A detective wants to achieve maximum magnification when looking at a fingerprint with a magnifying glass. (a) He should use a lens with (1) a long focal length, (2) a short focal length, (3) a larger size. Explain. (b) If ...A compound microscope has an objective lens with a focal length of 0.50 cm and an eyepiece with a focal length of 3.25 cm. The separation distance between the lenses is 22 cm. (a) What is the total magnification? (b) ...An astronomical telescope has an objective and an eyepiece whose focal lengths are 60 cm and 15 cm, respectively. What are the telescope’s (a) Magnifying power and (b) Length? The minimum angle of resolution of the diffraction patterns of two identical monochromatic point sources in a single-slit diffraction pattern is 0.0065 rad. If a slit width of 0.10 mm is used, what is the wavelength of the ...
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