What should be the two radii of curvature of a +3.00 diopter thin lens, constructed of glass with n = 1.520, if the lens is equiconvex?
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What should be the two radii of curvature of a +3.00 diopter thin lens, constructed of glass with n =
1.520, if the lens is equiconvex?
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- A 1.40 cm-high object is placed 4.00 cm to the left of a converging lens of focal length 8.00 cm. A diverging lens of focal length –12.00 cm is 5.00 cm to the right of the converging lens. (a) Find the position of the final image. 4.91 cm in front of the second lense 4.91 cm behind the second lense 6.24 cm behind the second lense 6.24 cm in front of the second lense (b) Find the height of the final image. 2.8 cm 1.34 cm 1.46 cm 0.67 cm (c) Is the final image inverted or upright? (d) Is the final image real or virtual?A large reflecting telescope has an objective mirror with a10.0 m radius of curvature. What angular magnificationdoes it produce when a 3.00 m focal length eyepiece isused?A thin plastic lens with index of refraction n = 1.69 has radii of curvature given by R, = -11.5 cm and R, = 30.0 cm. HINT (a) Determine the focal length in cm of the lens. cm (b) Determine whether the lens is converging or diverging. O converging O diverging Determine the image distances in cm for object distances of infinity, 7.00 cm, and 70.0 cm. (c) infinity cm (d) 7.00 cm cm (e) 70.0 cm cm
- (a) If your relaxed eye has a refractive power of 55.1 D, and your lens-to-retina distance is 2.35 cm, determine if you are near or far sighted.nearsightedfarsighted (b) If you are nearsighted, determine your far point. If you are farsighted, determine your near point.cmAn object and an image screen are separated by 50 cm. There are two locations betweenthem where a thin lens with f = 8 cm can be placed so that a focused image forms on thescreen. Find the two positions.A compound microscope has a barrel whose length is 16.0 cmand an eyepiece whose focal length is 1.4 cm. The viewer has a near pointlocated 25 cm from his eyes. What focal length must the objective have sothat the angular magnifi cation of the microscope will be -320?
- A thin plastic lens with index of refractionn = 1.69 has radii of curvature given by R, = -11.5 cm and R, = 30.0 cm. HINT (a) Determine the focal length in cm of the lens. -12.05 cm (b) Determine whether the lens is converging or diverging. O converging O diverging Determine the image distances in cm for object distances of infinity, 7.00 cm, and 70.0 cm. (c) infinity -12.05 By the sign conventions for thin lenses, the negative image distances indicate the images are formed in front of the lens (on the same side as the object). cm (d) 7.00 cm cm (e) 70.0 cm cmA nearsighted man wears contact lenses of -3.00 diopters. With these lenses, his corrected near point is 25.0 cm. What is his uncorrected near point?A converging thin lens has a 9.0 cm focal length. A 2.0-cm-tall object stands30 cm in front of this lens. Find the position and size (in absolute value) of the image formed bythis lens.