are to get corrective glasses that will be placed 2.0 in front of their eyes, what power of lens would th need to clearly see an object placed infinitely far a
Q: What would be the image distance for the -15.0 cm lens if the object distance were +60.0 cm? What…
A: Formula:1f=1do+1di1di=1f-1do----(1)where, f=-15.0 cm=-0.15 mdo=60.0 cm=0.6 mPutting values in the…
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A: 1. Image formation by the converging lensGiven:Object height (ho) = 2.5 cmObject distance from lens…
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Q: a person's near point is 100 cm, what must be the lens power in diopters that would enable her to…
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Q: astronomical telescope u
A: The focal length of the objective lensfo=50cm and D=fo2=25focal length of the eyepiece…
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Q: What power of spectacle lens is needed to correct the vision of a nearsighted person whose far point…
A: strategy:- You want this nearsighted person to be able to see very distant objects clearly. That…
Q: A myopic person sees that their glasses prescription is -3.25D. What is their far point? (Assume the…
A: Given data: Power of glasses is, P=-3.25 D. Distance of glasses from eyes is, d1=1.75 cm. Distance…
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A: Magnification of makeup mirror is Object distance is Find:Focal length of the mirror.
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Q: A 6.5X pair of binoculars has an objective focal lengthof 26 cm. If the binoculars are focused on an…
A: Given data: Objective focal length, fo=26 cm Object distance, u=4.0 m Focal length of eyepiece:…
Q: If the lens-to-retina distance of a woman is 1.98 cm, and the relaxed power of her eye is 51.0 D...…
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Q: Your reading glasses designed so that you can comfortably read a book that is 25.0 cm from your…
A: The expression for the refractive power is, Here, f is the focal length which is given as, Here, p…
Q: A person has a near point of 50 cm and a far point of infinity. What type of vision do they have and…
A: A person has a near point of 50 cm and a far point of infinity When a person can clearly seen the…
Q: Mary’s glasses have +4.0 D converging lenses. This gives her a near point of 20 cm. What is the…
A: The focal length of the lens can be obtained as
Q: An object is 30 cm in front of a converging lens with a focal length of 5 cm. Use ray tracing to…
A: Given that: the focal length of the Converging lens, f = 5cm Object distance, u = 30cm Let the image…
Q: What is the focal length of the eye–lens system whenviewing an object (a) at infinity, and (b) 34 cm…
A: Given data u=-34 cmv=2 cm
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A: Given data: The distance beyond which an eye can see clearly is D = 77 cm. The object distance is u…
Q: What should be the two radii of curvature of a +3.00 diopter thin lens, constructed of glass with n…
A: Solution:-Given thatPower of lens (P)=+3.00 DRefractive index (n)=1.520lens is equiconvex i.e.…
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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 woman can see clearly with her right eye only whenobjects are between 45 cm and 135 cm away.…
A: Given, For Upper part, Image distance, di=135 cm. For Lower part, Image distance, di=45 cm, object…
Q: The contact lens prescription for a mildly farsightedperson is 0.750 D, and the person has a near…
A: The near sight of the person is 29 cm, and the normal distance between the eye’s lens and retina is…
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- A 2 cm high object is viewed through a diverging lens with a -12 cm focal length. If the object is 8cm from the lens, then realtive to the lens where is the image and what is its height?A person is nearsighted, and the relaxed eye focuses at a distance of 50 cm. What is the strength of the desired corrective lens in diopters? thats the full questionReading glasses use converging lenses. A simple magnifieris also a converging lens. Are reading glasses thereforemagnifiers? Discuss the similarities and differencesbetween converging lenses as used for these two differentpurposes
- (a) If your relaxed eye has a refractive power of 55.1 D, and your lens-to-retina distance is 2.35 cm, determine if you are near or far sighted.nearsightedfarsighted (b) If you are nearsighted, determine your far point. If you are farsighted, determine your near point.cmAn object and an image screen are separated by 50 cm. There are two locations betweenthem where a thin lens with f = 8 cm can be placed so that a focused image forms on thescreen. Find the two positions.A thin plastic lens with index of refractionn = 1.69 has radii of curvature given by R, = -11.5 cm and R, = 30.0 cm. HINT (a) Determine the focal length in cm of the lens. -12.05 cm (b) Determine whether the lens is converging or diverging. O converging O diverging Determine the image distances in cm for object distances of infinity, 7.00 cm, and 70.0 cm. (c) infinity -12.05 By the sign conventions for thin lenses, the negative image distances indicate the images are formed in front of the lens (on the same side as the object). cm (d) 7.00 cm cm (e) 70.0 cm cm
- A far-sighted person has a near point of 1.75 m. What is the refracting power of contact lensesthat would correct their vision, resulting in a near point of 0.25 m?MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Your physics study partner is nearsighted. She has a near point of 50.0 cm from her eyes and she wears eyeglasses designed to allow her to read a newspaper held at a distance of 28.5 cm from her eyes. Determine the focal length of her glasses for each of the following cases. (a) She wears her eyeglasses 1.80 cm from her eyes. cm (b) She wears her eyeglasses 2.80 cm from her eyes. cmA nearsighted man wears contact lenses of -3.00 diopters. With these lenses, his corrected near point is 25.0 cm. What is his uncorrected near point?
- A magnifier is rated at 3.5 X for a normal eye focusingon an image at the near point. (a) What is its focal length?(b) What is its focal length if the 3.5 X refers to a relaxed eye?Why would you anticipate a spectacle lens of roughly 16 D to be given if the lens of a person's eye is removed due to cataracts?A person uses corrective glasses of power -8.5 D. (a) Is this person nearsighted or farsighted? (b) If the glasses are worn 2.0 cm from the eye, what is the person's far point without glasses?