A farsighted person has a near point located 0.80 m from their eyes. The refractive power of the corrective lenses is approximately:
-2.75 D
2.75 D
0.36 D
-0.36 D


A farsighted person has a near point located 0.80 m from their eyes. The refractive power...
A nearsighted person has a far point located 0.8 m from their eyes. The refractive power of the corrective lenses is approximately: -0.8 D -1.25 D 0.8 D 1.25 D
8. A farsighted person has a near point located 210 cm away from the eyes. Determine the focal length of the converging lenses in a pair of contact lenses that can be used to read a book held 25.0 cm from the eyes.
If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f_2 of the contact lenses that the person would need to be able to read a book held at 0.350 m from the person's eyes?
If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f2 of the contact lenses that the person would need to be able to read a book held at 0.350 m from the person's eyes?
A person has a near point of 14 cm and a far point of 82 cm. Is the person nearsighted or farsighted? What focal length corrective lens will allow this person to read the whiteboard from the back of a large classroom? Are the corrective lenses converging or diverging? What is the power of the corrective lenses?
Calculate the near point of a farsighted person if she was prescribed a corrective lens of power +2.00 diopters. Calculate the far point of a nearsighted person if she was prescribed a corrective lens power of -1.5 diopters.
The greatest refractive power a patient's eyes can produce is 43.1 diopters. (a) is this patient nearsighted or farsighted? (b) If this patient is nearsighted, find the far point. if this person is farsighted, find the near point. (treat eye as a single-lens system, with the retina 2.4 cm from the lens)
A farsighted man uses
eyeglasses with a refractive power of 2.25 diopters. Wearing the
glasses 0.030 m from his eyes, he is able to read books held no
closer than 0.295 m from his eyes. He would like a prescription for
contact lenses to serve the same purpose. What is the correct
contact lens prescription, in diopters?
9. A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0.030 m from his eyes, he is...
(1.) Nearsightedness (a.) A nearsighted person has a far point that is 323 cm from her eye. Her lens in a pair of glasses is 2 cm in front of her eye. What focal length is required to cast the image of a far-away object at her far point? (b.) If these glasses are used to view an object 525 cm from her eye, where do her glasses cast the image? In both cases, quote your distance as measured from...
A farsighted person has a near point of 100cm. A corrective lens needs to create a virtual image at this distance if an object is placed at 25 cm. a. What power (in diopters) lens is needed? b. What type of lens is this? (diverging or converging)