Problem 6: With -5.0 D corrective lenses, Juliana's distant vision is quite sharp. She has a pair of -3.5 D computer glasses that puts her computer screen right at her far point. How far away is her computer?
Q: To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the…
A: The image distance: p=29.0 cm=0.29 m The magnification of the lens: M=0.0140
Q: Camera zoom is often a two lens system. A converging lens followed by a diverging lens. If the focal…
A:
Q: A patient has a near point of 42.3 cm and far point of 90.6 cm. Can a single lens correct the…
A:
Q: Nearsighted Nick’s eyes are 18.0 cm and 80.0 cm.
A: Solution
Q: The afocal telescope shown below is set up as a laser beam expander, with fi = 1 cm and f₂ = 10 cm.…
A:
Q: To fit a contact lens to a patient's eye, keratometer can be used to measure the curvature of the…
A: Solution:-
Q: To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the…
A: The radius of curvature of cornea is measured in a method. In this method, the image formed by the…
Q: Rachel has good distant vision but has a touch of presbyopia. Her near point is 0.60 m. When she…
A:
Q: An object with height y =15.0 cm is placed on the optical axis in front of a converging lens with an…
A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts (a, b,…
Q: Susan is quite nearsighted; without her glasses, her far point is 39 cmcm and her near point is 14…
A: Far point is 39 cm.Near point is 14 cm.
Q: 66. A diverging lens has a focal length of-8.00 cm. (a) What are the image distances for objects…
A: 68) focal length of the diverging lens (f) = -8 cm
Q: The near point of a farsighted person is 65 cm. What power contact lens must he use to correct this…
A:
Q: An office administrator realizes that she is having trouble doing her work due to eyesight problems.…
A:
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: 5. Yang can focus on objects 160cm away with a relaxed eye. With full accommodation, she can focus…
A:
Q: An office administrator realizes that she is having trouble doing her work due to eyesight problems.…
A:
Q: A school boy uses a 2.0 D lens to enable him to see objects at infinity. What is the near point of…
A: Given: A school boy uses a 2.0 D lens to enable him to see objects at infinity Power = 2.0 D
Q: A researcher is trying to shoot a tranquilizer dart at a 2.0-m-tall rhino that is 150 m away. Its…
A:
Q: object is 23 cm from a converging lens. A diverging lens with a focal length of −15 cm is 31 cm…
A: Given Object distance for convex lens= -23 cm Focal length of concave lens f2 = -15 cm
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: A nearsighted physicist cannot see things clearly beyond 90 cm from her eyes. What is the power of…
A: When a nearsighted physicist cannot see things clearly beyond 90 cm from her eyes, the object…
Q: What power contact lens is needed to correct for farsightedness where the uncorrected n 75 cm? O…
A: Given value--- uncorrected near point = 75 cm. We have to find--- power of contact lense ?
Q: When looking at green dots (A = 520 nm) on a page held 6.0 m away, what is the smallest separation…
A:
Q: 4b. A converging lens (fi- 30.0 cm) is placed at a distance of 50.0 cm from a diverging lens a lens…
A: To find : Location of object Ray diagram
Q: A person is near sighted. Without vision correction, the far point of her right eye is a modest 40…
A:
Q: Naiya wears glasses to correct her nearsightedness. The lense have a power of P1 -2.50 D, and they…
A: Given: Power of lenses is P1=-2.50D Object distance u=∞ For backup pair of glasses, Object distance…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- A person has a far point of 321.0 cm and a near point of 65.4 cm. Bifocals were designed for them to sit 1.78 cm in front of their eyes so that distant objects (d0 = ∞) can be seen clearly with the major lens and a minor lens is formed inside that allows the “focused” eye to read objects at the normal near point (25 cm). 1.What is the power of the major and minor lens in diopters? 2.What would the new near point be if we only looked through the major lens? 3.What would the far point be if we only looked through the minor lens? 4.If you were to construct a telescope from these 2 lenses, assuming a relaxed eye, which lens would be the objective and which the eyepiece, what would be the separation distance between your lenses and what would be the magnification of your telescope?With -5.0 D corrective lenses, Juliana’s distant vision is quite sharp. She has a pair of -3.5 D computer glasses that puts her computer screen right at her far point. How far away is her computer?Create a ray diagram for eyeglasses that contain a diverging lens. Assume you are looking at a 2 cm tall object that is 4 cm from the lens. The focal length is 3 cm. What type of vision are they used to correct? Give both names. How do they do this? Explain.
- 1. A patient enters an eye doctor’s office and finds the doctor tells him that his near point is 10.0 cm. The doctor also finds the patient’s far point (with eyes relaxed) is 125 cm. Each eye lens can be assumed to be 2.00 cm from the retina. a) Between what limits (units: diopters) does the power of this patient’s lens (technically lens+cornea combination) vary? b) The doctor is going to prescribe glasses. Calculate the power of the eyeglass lens the patient should use for relaxed distance vision. Is the lens converging or diverging?Suppose your 50.0 mm focal length camera lens is 52.5 mm away from the film in the camera. (a) How far away (in m) is an object that is in focus? m (b) What is the height (in m) of the object if its image is 1.90 cm high? mAn office administrator realizes that she is having trouble doing her work due to eyesight problems. Her optometrist determines that without glasses she can focus clearly only on objects that lie at distances between 0.450 m and 4.00 m. The optometrist decides that the best way to handle her eyesight problems is to prescribe bifocals that will give her normal visual acuity from 25.0 cm out to infinity. After trying on several pairs of glasses frames, they agree that the glasses will be a distance of 2.20 cm from her eyes. (a) Determine the refractive power needed for the bifocal part that will correct for her nearsightedness (include the sign). D What type of lens is needed? O converging O diverging (b) Determine the refractive power needed for the bifocal part that will correct for her farsightedness (include the sign). D What type of lens is needed? O converging diverging