Reading glasses of what power are needed for a person whose near point is 115 cm...
Reading glasses of what power are needed for a person whose near point is 115 cm , so that he can read a computer screen at 58 cm ? Assume a lens-eye distance of 2.0 cm .
Express your answer using two significant figures.
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Reading glasses of what power are needed for a person whose near
point is 115 cm...
Reading glasses of what power are needed for a person whose near point is 120 cm,...
Reading glasses of what power are needed for a person whose near point is 120 cm, so that she can read a computer screen at 55 cm?Assume a lens-eye distance of 2.0 cm.
Reading glasses of what power are needed for a person whose near point is 50.0 cm,...
Reading glasses of what power are needed for a person whose near point is 50.0 cm, so that she can read clearly the print of a book located at 25.0 cm? Assume a lens-eye distance of 2.00 cm.
What power lens is needed to correct for the farsightedness of a person whose near point...
What power lens is needed to correct for the farsightedness of a person whose near point is 58.0 cm? (Assume that eye-lens distance is negligible and the normal near point of the eye is 25.0 cm). Answer in diopters please.
At age 45, a person is fitted for reading glasses that have a power equal to...
At age 45, a person is fitted for reading glasses that have a power equal to 2.13 D in order to read at 25.0 cm. By the time she reaches the age of 55, she discovers herself holding her newspaper at a distance of 38.0 cm in order to see it clearly with her glasses on. Assume the glasses are placed 2.2 cm from her eyes. (a) Where was her near point at age 45? (b) Where is her near...
A farsighted person has a near point of 75 cm rather the normal 25 cm. What...
A farsighted person has a near point of 75 cm rather the normal 25 cm. What strength lens, in diopters, should be prescribed to correct this vision problem? Object , o = 25cm, image, i= -75cm(negative, in front of lens) Martin is severe myopia, with a far point of 15cm. he wants to get a glass that he ‘ll wear while using his computer, whose screen is 75cm away. What refractive power will these glasses required? Object, o=75 cm, image,...
an older person needs a pair of reading glasses.Her near point is at 48 cm from...
an older person needs a pair of reading glasses.Her near point is at 48 cm from her eyes and reading glasses are 2 cm from her eyes. The glasses should allow her to read 25 cm away. What are the object and image distances? what is the magnification of these lenses? What is the focal length of the pair of glasses? What is the optical power of the lens pair? What type of lenses (converging, diverging) does she need?
A near-sighted person has a far point of 80 cm. A) What kind of corrective lens...
A near-sighted person has a far point of 80 cm. A) What kind of corrective lens the person will need if the lens is to be placed 1.5 cm from the eye? The answer is not 78.5, 80 or -1.27 B) What would be the power of the contact lens needed? Assume distance to contact lens from the eye to be zero.
A person is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is...
A person is nearsighted with a near point of 75. cm. (a) What FOCAL LENGTH is this? (b) What POWER lens is needed to correct their nearsightedness (assuming distance from lens to eye is negligible)?
(1.) Nearsightedness (a.) A nearsighted person has a far point that is 323 cm from her...
(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...
Suppose that you have farsighted eye such that your near point is 95 cm. As a...
Suppose that you have farsighted eye such that your near point is 95 cm. As a result you need a reading glass. What lens power (in D) must you wear so that a newspaper can be read at a distance of 25 cm? Assume the lens is very close to your eye.
(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...
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