A nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision
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
Homework Answers
Add Answer to:
A nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision
Bailey has a eyeglasses with a prescription of -4.00D. While wearing these glasses so that the lenses sit 2.00 cm i...
Bailey has a eyeglasses with a prescription of -4.00D. While wearing these glasses so that the lenses sit 2.00 cm in front of the eyes, Bailey can see distant object clearly with fully relaxed eyes. Part a What is the far point for Bailey's uncorrected vision? Please enter a numerical answer below Accepted formats are numbers or 'e based scientific notation e.g.0.23,-2 1e6, 5.23e-8 Enter answer here cm 0 of 10 attempts used CHECK ANSWER Part b If Bailey wants...
4)Aseverely nearsighted person needs corective lenses. In one eye, this person can focus on objects over...
4)Aseverely nearsighted person needs corective lenses. In one eye, this person can focus on objects over a range from as close as 15.8cm to as far away as 69.1cm. A) What strength (in diopters) contact lens would correct the vision in this eye? B) If instead of contact lenses, this person were to get glasses, the lenses of the glasses will sit a distance of 1.9 cm from the person's eye. What strength lens (in diopters) would be needed for...
1. I am nearsighted and looking for contact lenses which will correct my vision. I should...
1. I am nearsighted and looking for contact lenses which will correct my vision. I should select: a. A diverging lens, characterized by a negative focusing power b. A converging lens, characterized by a negative focusing power c. A diverging lens, characterized by a positive focusing power d. A converging lens, characterized by a positive focusing power 2. I have a glass lens (index of refraction 1.5) with a concave side with radius of curvature 2 m and a convex...
A person can see clearly up close, but cannot focus on objects beyond 82.0cm . She opts for contact lenses to corre...
A person can see clearly up close, but cannot focus on objects beyond 82.0cm . She opts for contact lenses to correct her vision. Part A Is she nearsighted or farsighted? Part B What type of lens (converging or diverging) is needed to correct her vision? Part C What focal-length contact lens is needed ?
A nearsighted person wears contact lenses of refractive power -6.0 D. What is her far point?...
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
A person has a near point of 14 cm and a far point of 82 cm....
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?
A nearsighted person can see images crisply to a far point of 50 cm away. A farsighted person can...
A nearsighted person can see images crisply to a far point of 50 cm away. A farsighted person can see that same distance. Prescribe contact lenses for both these people. Answer in diopters.
A nearsighted student wears contact lenses to correct for a far point that is 4.50m from...
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.
A child's far point is 127 cm and her near point is 12.5 cm In what...
A child's far point is 127 cm and her near point is 12.5 cm In what follows, we assume that we can model the eye as a simple camera, with a single thin lens forming a real image upon the retina. We also assume that the child's eyes are identical, with each retina lying 1.90 cm from the eye's "thin lens." (1) What is the power, P, of the eye when focused upon the far paint? (Enter your answer in...
A farsighted boy has a near point at 0.5m and requires contact lenses to correct his...
A farsighted boy has a near point at 0.5m and requires contact lenses to correct his vision to the normal near point. What is the correct choice of lens power for the contact lenses? The answer is +6.0 diopters but I keep getting 2 so I'm not sure what I am doing wrong.
Bailey has a eyeglasses with a prescription of -4.00D. While wearing these glasses so that the lenses sit 2.00 cm in front of the eyes, Bailey can see distant object clearly with fully relaxed eyes. Part a What is the far point for Bailey's uncorrected vision? Please enter a numerical answer below Accepted formats are numbers or 'e based scientific notation e.g.0.23,-2 1e6, 5.23e-8 Enter answer here cm 0 of 10 attempts used CHECK ANSWER Part b If Bailey wants...
4)Aseverely nearsighted person needs corective lenses. In one eye, this person can focus on objects over a range from as close as 15.8cm to as far away as 69.1cm. A) What strength (in diopters) contact lens would correct the vision in this eye? B) If instead of contact lenses, this person were to get glasses, the lenses of the glasses will sit a distance of 1.9 cm from the person's eye. What strength lens (in diopters) would be needed for...
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.
A child's far point is 127 cm and her near point is 12.5 cm In what follows, we assume that we can model the eye as a simple camera, with a single thin lens forming a real image upon the retina. We also assume that the child's eyes are identical, with each retina lying 1.90 cm from the eye's "thin lens." (1) What is the power, P, of the eye when focused upon the far paint? (Enter your answer in...
Most questions answered within 3 hours.
-
The number of major faults on a randomly chosen 1 km stretch of
highway has a...
asked 1 minute ago -
Consider the competitive environment of Starbuck's, Progressive
Insurance, a manufacturing firm with low turnover, or a...
asked 47 minutes ago -
3. Gains from trade
Consider two neighbouring island countries called Euphoria and
Contente. They each have...
asked 2 hours ago -
A business executive has the option to invest money in two
plans: Plan A guarantees that...
asked 5 hours ago -
Hello, can someone please help me answer this question?
How much heat is absorbed by a...
asked 4 hours ago -
. A marketing researcher conducted a survey of 25 shoppers
randomly selected at the local mall...
asked 5 hours ago -
Create an comprehensive response to the
following:
Antimicrobial agents work on a multitude of microbes (bacteria,...
asked 5 hours ago -
6.13 LAB: Step counter. Section 6.3.
A pedometer treats walking 2,000 steps as walking 1 mile....
asked 5 hours ago -
(14.2) A block of mass m = 10 kg riding on a frictionless
horizontal plane is...
asked 5 hours ago -
Use any search engine to search for articles about Starbucks
partnership with Tata Companies in India...
asked 5 hours ago -
Let’s say that for some reason Bank Excess Reserves suddenly
increase sharply. What effect would this...
asked 5 hours ago -
Given:
Curent Assets: $600,000
Total Assets: $2,600,000
Current Liabilities: $500,000
Total Liabilities: $1,700,000
What is the...
asked 5 hours ago