A nearsighted person wears contact lenses of refractive power -6.0 D. What is her far point?
17 cm
6.0 cm
-17 cm
-4.0 cm
-6.0 cm
focal length of the lens, f = -(1/P) = -(1/(-6)) m = (100/6) cm = 16.67 cm =17 cm (approx)
The far point of the person is 17.0 cm
Option (i) is the correct choice.
A nearsighted person wears contact lenses of refractive power -6.0 D. What is her far point?...
A nearsighted student wears contact lenses to correct for a far point that is 4.50m from her eyes. When she is not wearing her contact lenses, her near point is 24cm What is her near point when she is wearing her contacts? Express your answer using two significant figures.
(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 nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision. What lens strength (a.k.a., lens power), in Diopters, should be prescribed? Give your answer using the usual convention of positive values for converging lenses and negative values for diverging lenses. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 146, 5.23e-8
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
A nearsighted person wears glasses to correct the person. The lenses in the glasses have a focal length of -547cm and are worn 2cm from the eyes. With the glasses theperson can see an object clearly that is very far away. How far from the eyes is the person's far point located?
A person is nearsighted (myopic). The power of his eyeglass lenses is -4.50 diopters, and he wears the lenses 1.19 cm in front of his corneas. What is the prescribedpower (in diopters) of his contact lenses?
The far point of a nearsighted person is 6.9 m from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is 14.8 m away and 2.8 m high. (a) When she looks through the contacts at the tree, what is its image distance? (b) How high is the image formed by the contacts?
The far point of a nearsighted person is 4.9 m from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is 23.1 m away and 1.6 m high. (a) When she looks through the contacts at the tree, what is its image distance? (b) How high is the image formed by the contacts?
A nearsighted person has near and far points of 12.0 and 23.0 cm , respectively. Part A If she puts on contact lenses with power P = -3.00 D , what are her new near and far points?
A nearsighted man uses his ideally prescribed eyeglasses that have a refractive power of −3.30 diopters. He would like a prescription for contact lenses. What is the correct contact lens prescription if he normally wears his eyeglasses a distance of 2.00 cm from his eyes?