1. Susan is quite nearsighted; without her glasses, her far point is 52 cm and her...
1. Susan is quite nearsighted; without her glasses, her far point is 52 cm and her near point is 16 cm. Her glasses allow her to view distant objects with her eye relaxed. (a) Are the lenses of her glasses converging or diverging? (b) Find the focal length of the lenses of her glasses. (c) Find her near point while wearing her glasses. (d) Find the minimum power of the lens she should use as a magnifier in order to see clearly at a distance of 9.0 cm without wearing her glasses.
Homework Answers
Add Answer to:
1. Susan is quite nearsighted; without her glasses, her far
point is 52 cm and her...
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near...
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 12 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus?
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near...
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 18 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus? Express your answer with the appropriate units.
7.[10 pts) A nearsighted student has his near point at 16.0 cm and far point at...
7.[10 pts) A nearsighted student has his near point at 16.0 cm and far point at 45.0 cm without his glasses. He then uses a glasses that allow him to view distant objects with his eye relaxed. With his glasses on, what is the closest object on which he can focus?
3) (20 points) A nearsighted person has a far point located only 521 cm from the...
3) (20 points) A nearsighted person has a far point located only 521 cm from the eye. Assuming the eyeglasses are worn 2 cm in front of the eye, find the focal length needed for the diverging lenses of the glasses so the person can see distant objects.
(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...
With a near point of 12.0 cm, a nearsighted technician can focus on relatively nearby objects....
With a near point of 12.0 cm, a nearsighted technician can focus on relatively nearby objects. Yet, with a far point 58.0 cm out, he cannot clearly see distant objects without optical aid. (a) Calculate the focal length (in cm) of a contact lens that would enable this technician to clearly view very distant objects. (Hint: Allow p to approach infinity in the thin-lens equation). (b) What power (in diopters) describes this contact lens? (c) When this contact lens is...
With a near point of 15.0 cm, a nearsighted professor can focus on relatively nearby objects....
With a near point of 15.0 cm, a nearsighted professor can focus on relatively nearby objects. Yet, with a far point 62.0 cm out, he cannot clearly see distant objects without optical ald. (a) Calculate the focal length (in cm) of a contact lens that would enable this professor to clearly view very distant objects. (Hint: Allow p to approach Infinity in the thin-lens equation). (b) What power (in diopters) describes this contact lens? diopters (c) When this contact lens...
Claudia is nearsighted. She has a near point of 12 cm and a far point of...
Claudia is nearsighted. She has a near point of 12 cm and a far point of 17 cm. If the corrective lens is 2.0 cm from Claudia’s eye, what lens power will enable her to see distant objects clearly? -6.7 diopters +8.5 diopters -5.3 diopters – 17 diopters
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?
An optometrist tests a person and finds that without glasses, he needs to have his eyes...
An optometrist tests a person and finds that without glasses, he needs to have his eyes 15.0 cm from a book to read comfortably and can focus clearly only on distant objects up to 2.75 m away, but no farther. A typical normal eye should be able to focus on objects that are between 25.0 cm (the near point) and infinity (the far point) from the eye. (a) What type of correcting lenses does the person need: single focal length...
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 18 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus? Express your answer with the appropriate units.
7.[10 pts) A nearsighted student has his near point at 16.0 cm and far point at 45.0 cm without his glasses. He then uses a glasses that allow him to view distant objects with his eye relaxed. With his glasses on, what is the closest object on which he can focus?
3) (20 points) A nearsighted person has a far point located only 521 cm from the eye. Assuming the eyeglasses are worn 2 cm in front of the eye, find the focal length needed for the diverging lenses of the glasses so the person can see distant objects.
(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...
With a near point of 15.0 cm, a nearsighted professor can focus on relatively nearby objects. Yet, with a far point 62.0 cm out, he cannot clearly see distant objects without optical ald. (a) Calculate the focal length (in cm) of a contact lens that would enable this professor to clearly view very distant objects. (Hint: Allow p to approach Infinity in the thin-lens equation). (b) What power (in diopters) describes this contact lens? diopters (c) When this contact lens...
Most questions answered within 3 hours.
-
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 20 minutes ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 1 hour ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 1 hour ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 3 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 3 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 4 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 5 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 5 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 5 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 6 hours ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 6 hours ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 6 hours ago