Roger's punctum proximum (PP) is 10cm and his punctum remotum (PR) is 150cm. (A) What is its amplitude of accommodation? (B) What problem does he suffer from? (C) What is the vergence of the corrective lenses that he should be prescribed? (D) What is his range of clear vision (the range of distances where vision is clear) when he wears his glasses?

Q: In the Newton's Rings apparatus, the light of 560nm and convex-planar lens of radi of curvature…

A: Given: The wavelength of the light 560 nm.            The radius of curvature of the convex planar…

Q: A person has a defect eye with a clear vision at distances from his eye from 0.15m to 0.80m.…

A: The distant object examination means the object is at infinity Therefore the distance would be…

Q: Assume that the cornea has an anterior radius of curvature R1= 7.8 mm, a posterior radius of…

A: The expression for the required power of the cornea is,

Q: Sir or Maam, I inserted the whole question, but I only need help with D and E, please.  (This…

A: Given: 1 min = 60s 1 cm = 0.01 m v = speed of track = 1.35 m/s r1 = initial radius of track = 2.30…

Q: answer

A: Given: 3.247 + 41.35 +0.2 - (23.45 x 1.5376) =

Q: A man can see distinctly only object which lie between 23cm_400cm from his eye: 1_What is the useful…

A: A man can see distinctly  only object Then the person is suffering from Hypermetropia. Convex Lens…

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A:

Q: If eyeglasses with diverging lenses are used (Power = −1.28 dp), what is the far distance?(Assume a…

A:

Q: A person with refractive myopia can see objects as close as 30 cm clearly, and objects as far away…

A:

Q: The near point of a farsighted person is 100 cm. She places reading glasses very close to her eyes…

A: Given,  p = 25 cm q = -100 cm

Q: A student claimed that, because of atmospheric refraction , the sun can be seen after it has set…

A: a) The above statement means that sun can be visible even after the sunset. This is due to the…

Q: A lens with two convex surfaces, both with radii of curvature of 0.25 meters, is used to focus…

A:

Q: What is the vision problem of the person in the figures (a) and (b) below according to the vision…

A: To correct the far-sightedness we use a converging lens. It produces image farther from the eye than…

Q: In the Newton's Rings apparatus, the light of 600nm and convex-planar lens of radius of curvature…

A:

Q: Find the position and magnification of the entrance pupil of the eye taking the actual pupil to be…

A:

Q: Light from a point source of 50 candlepower, which radiates uniformly in all directions, falls on a…

A: To calculate the fraction of the total flux from the source that is incident on the lens, we need to…

Q: A thin equiconvex lens with radii of curvature 220mmis made of crown glass with refractive indices…

A: Chromatic dispersion refers to the phenomenon where different wavelengths (or colors) of light have…

Q: Thirty-five centimetres is the shortest distance at which you can clearly distinguish two persons…

A: Please see the next step for solution:-

Q: Consider a common mirage formed by superheated air just above a roadway. A truck driver whose eyes…

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Q: What is the power of the eye in D when viewing an object 62.3 cm away? (Assume the lens-to-retina…

A:

Q: Why is your vision so blurry when you open your eyes while swimming under water? How does a face…

A: Light differently travels in different mediums and thus the image of the objects appears different…

Q: A student's eyes, while reading the blackboard, have a power of 51.3 D. How far in m is the board…

A:

Q: Surface tension and density of water and oil are 25 mN/m 0.81 g/cm3, 72.75 mN/m, and 0.9982 g/cm3,…

A:

Q: A thin equiconvex lens with radii of curvature 220 mm is made of crown glass with refractive indices…

A: To find the focal length of the equiconvex lens, we can use the lens maker's formula:where f is the…

Q: A person with refractive myopia can see objects as close as 20 cm clearly, and objects as far away…

A: It is given that,

Q: When dots are printed from a laser printer to form letters, they must be close enough so that you do…

A:

Q: A person with a normal lens-to-retina distance wears contact lenses with an optical power of 1.54 D…

A: Here, the optical power of lens used is positive. Hence, the lens used is a convex lens and the…

Q: Assume that the anterior radius, posterior radius, and thickness of the lens are 9.4 mm, -5.6 mm,…

A: Consider a lens (convex) of refractive index nl is placed in the medium (inside aqueous and vitreous…

Q: Frank can see fine at long distances but now needs to hold a restaurant menu at 50.0 cm from his…

A: u = -(50-1.5) = -48.5 cm  v = -(25-1.5) = -23.5 cm

Q: A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red…

A: A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red…

Q: The near point of a hypermyopic person is 75 cm from the eye. What is the power of the lens required…

A: