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1. [-I1 Poi nts] WAUNIPHYSAV1 34.P.026.TUTORIAL. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The lens-to-retina distance of a woman is 2.00 cm, and the relaxed power of her eye is 58.0 D. (a) What is her far point? Em (b) What eyeglass power will allow her to see distant objects clearly, if her glasses are 1.80 cm from her eyes? D Q Tlmrlal 2. [-I1 Paints] WAUNIPHYSAV1 34.P.029. ASK YOUR TEACHER PRACTICE ANOTHER The contact lens prescription for a nearsighted person is 3.25 D, and the person has a far point of 22.2 cm. What is the power of the tear layer between the cornea and the lens if the correction is ideal, taking the tear layer into account? :10 3. [I1 Points] WAUNIPHYSAV1 34.P.033. ASK YOUR TEACHER PRACTICE ANOTHER Mary's uncorrected far point is 3.10 m from her eyes. Determine the focal length of the glasses worn 1.80 cm from her eyes that will allow her to see distant objects clearly, :er 4. {11 Points] WAUNIPHYSAV1 34.P.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A colleague wears eyeglasses that rest 1.80 cm in front of her eyes and have a power of 5.69 D. Determine the following. (a) the focal length of her glasses, m (b) if she is nearsighted or farsighted O nearsighted O farsighted (c) the refracting power of the contact lens that would replace her glasses D 5. [-I1 Points] WAUNIPHYSAV1 34.P.041. ASK YOUR TEACHER PRACTICE ANOTHER Suppose a certain person's visual acuity is such that he can see objects clearly that form an image 4.35um high on his retina. What is the maximum distance at which he can read the 76.0cm high letters on the side of an airplane? (Assume a 2.00cm distance between retina and lens.) :ikm e. [11 Points] WAUNIPHYSAV1 34.P.052.TUTORIAL. MY NOTES ASK YOUR TEACH ER PRACTICE ANOTHER A custom-made compound microscope (see the gure below) with an objective lens with a focal length of 3.85 cm, an eyepiece lens with a focal length of 6.45 cm and a barrel length of 27.0 cm is used to view a 0.100 cm specimen mounted on a microscope slide. Since the microscope is custommade, it varies slightly from a standard production microscope in that the object distance for the objective is so much larger than the focal length of the objective that we cannot set the object distance for the objective equal to the focal length of the objective. However, the image formed by the objective is close enough to the focal point of the eyepiece that we are justified in setting the object distance for the eyepiece equal to the focal length of the eyepiece. Finally, the microscope is being used by a lab technician with a near point of 34.5 cm. (Use the exact values you enter to make later calculations) \"H '17 d|,-' :1 42o 1: . . Eyepiece Ob KIWI lens Ohlmi ' I lens ---+ ---------------------- ,- '--l -------- - T \\ I E f.+|:\\/f.:l L Li, :lL/ D' Vim, l Final image Determine the following. (a) distance the specimen (object) is mounted from the objective lens (Enter your answer to at least two decimal places.) cm (b) magnication of the objective lens (Include the sign of the value in your answer. Enter your answer to at least two decimal places.) (c) magnication of the eyepiece lens (Include the sign of the value in your answer.) (d) overall magnication for the microscope (Include the sign of the value in your answer.) (e) height of the image formed by the objective (Include the sign of the value in your answer.) cm (f) height of the nal image formed by the microscope (Include the sign of the value in your answer.) cm (9) absolute value of angle subtended at the technician's eye when she holds the specimen at her near point and views it with her unaided eye rad (h) absolute value of angle subtended at the technician's eye when she views the specimen through the microscope rad , 7. [-/1 Points] DETAILS WAUNIPHYSAV1 34.P.053. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A microscope with an overall magnification of 812 has an objective that magnifies by 187. (a) What is the magnification of the eyepiece? (b) If there are two other objectives that can be used, having magnifications of 100 and 400, what other total magnifications are possible? (100x objective) (400x objective) 8. [-/1 Points] DETAILS WAUNIPHYSAV1 34.P.065.TUTORIAL. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The telescope at a small observatory has objective and eyepiece focal lengths of 18.2 m and 12 cm, respectively. If this telescope is used to view a 1620 m diameter lunar crater on the surface of the Moon 3.77 x 10 m from the surface of the Earth, determine the following. (a) angular magnification of the telescope (Include the appropriate positive or negative sign.) (b) size of the first image (Include the appropriate positive or negative sign.) m (c) length of the barrel of the telescope (d) angle subtended at the unaided eye by the lunar crater rad (e) the absolute value of the angle subtended at the eye when the lunar crater is viewed through the telescope rad (129 Tutorial9. [/1 Points] WAUNIPHYSAV1 34.P.069. ASK YOUR TEACHER PRACTICE ANOTHER A small telescope has a concave mirror with a 5.50-m radius of curvature for its objective. lts eyepiece is a 4'10-cm focal length lens. (a) What is the telescope's angular magnication? (b) What is the angle subtended by a 25,000-km diameter sunspot? The average EarthSun distance is 1.496 x 1011 mi rad (c) What is the angle of its telescopic image? rad 10. [-11 Points] WAUNIPHVSAV1 34.P.074. ASK VOURTEACHER PRACTICE ANOTHER As an astronomy project, you propose to construct a telescope from several pairs of discarded eyeglasses. You select two lenses, lens 1 and lens 2, that have a refractive power respectively of 11.0 D and 3.77 D. Determine the following. (a) the lens that should be used for the objective 0 lens 1 0 lens 2 (b) the amount by which you should separate the two lenses m (c) the angular magnication of the telescope