If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f_2 of the contact lenses...
Homework Answers
The concept used to solve this problem is lens equation.
First use the relationship between object distance and image distance to calculate the focal length.
The lens equation is defined as the relationship between the image distance, object distance, and focal length.
Expression for the focal length is,
Here, f is the focal length, v is the image distance, and u is the object distance.
Object distance, 
Image distance, 
Expression for the focal length is,
Substitute 
for u and 
for v.
Rearrange the equation to get the focal length,
The focal length of the contact lens is 
.
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If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f_2 of the contact lenses...
If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f2 of the contact lenses...
If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f2 of the contact lenses that the person would need to be able to read a book held at 0.350 m from the person's eyes?
8. A farsighted person has a near point located 210 cm away from the eyes. Determine...
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A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts,...
A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts, he is able to read books held no closer than 0.285 m from his eyes. He would like a prescription for eyeglasses to serve the same purpose. What is the correct prescription for the eyeglasses if the distance from the eyeglasses to his eyes is 0.030 m? in dipoters ??? not 1.67 A diverging lens (f1 = −13.5 cm) is located 23.0 cm to...
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