A farsighted professor can read the State News at d = 175 cm, but no closer....
A farsighted professor can read the State News at d = 175 cm, but no closer. What power (in diopters) lens should he use for reading?
Homework Answers
let's assume the distance of object kept for reading is kept at distance of 25cm, as it is not given in question.
The real object is 25 cm away from the front of the lens, and we want to produce an image that appears to be 100 cm away 175cm from the lens so this will be negative. Plug everything into the equation:
power of lens (D) 1/f = 1/d1 + 1/d2
d1 = .25 m (for reading)
d2 = 1.75m
1/f = 1/.25 - 1/1.75 = 4 - .5714 = 3.4285 ~ 3.43 D
Add Answer to:
A farsighted professor can read the State News at d = 175 cm,
but no closer....
A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0.030...
A farsighted man uses
eyeglasses with a refractive power of 2.25 diopters. Wearing the
glasses 0.030 m from his eyes, he is able to read books held no
closer than 0.295 m from his eyes. He would like a prescription for
contact lenses to serve the same purpose. What is the correct
contact lens prescription, in diopters?
9. A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0.030 m from his eyes, he is...
A particular patient's eyes are unable to focus on objects closer than 34.5 cm and corrected...
A particular patient's eyes are unable to focus on objects closer than 34.5 cm and corrected lenses are to be prescribed so that the patient can focus on objects 22.0 cm from their eyes HINT (a) is the patient nearsighted or farsighted? O nearsighted O farsighted (b) If contact lenses are to be prescribed, determine the required lens power (in diopters). diopters (c) veglasses are to be prescribed instead and the distance between the eyes and the lenses is 1.80...
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a...
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 67 cm, which makes it difficult for the physicist to read books and journals. Find the focal length and power of a lens that will correct this presbyopia for a reading distance of 25 cm, when worn 2 cm in front of the eye focal length: cm diopters power Is this a converging or a diverging lens? converging diverging
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a...
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 87 cm, which makes it difficult for the physicist to read books and journals. Find the focal length and power of a lens that will correct this presbyopia for a reading distance of 25 cm, when worn 2 cm in front of the eye. focal length: cm power: diopters Is this a converging or a diverging lens? diverging converging
A patient can't see objects closer than 32 cm and wishes to clearly see objects that...
A patient can't see objects closer than 32 cm and wishes to clearly see objects that are 18.3 cm from his eye. (a) Is the patient nearsighted or farsighted? (b) If the eye-lens distance is 1.92 cm, what is the minimum object distance p from the lens? in cm (c) What image position with respect to the lens will allow the patient to see the object? in cm (d) Is the image real or virtual? Is the image distance q...
A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0....
A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0.030 m from his eyes, he is able to read books held no closer than 0.305 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters?
A farsighted man uses eyeglasses with a refractive power of 3.09 diopters. Wearing the glasses 0.026...
A farsighted man uses eyeglasses with a refractive power of 3.09 diopters. Wearing the glasses 0.026 m from his eyes, he is able to read books held no closer than 0.270 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters?
A farsighted man uses eyeglasses with a refractive power of 1.85 diopters. Wearing the glasses 0.020...
A farsighted man uses eyeglasses with a refractive power of 1.85 diopters. Wearing the glasses 0.020 m from his eyes, he is able to read books held no closer than 0.275 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters?
A farsighted man uses eyeglasses with a refractive power of 1.80 diopters. Wearing the glasses 0.025...
A farsighted man uses eyeglasses with a refractive power of 1.80 diopters. Wearing the glasses 0.025 m from his eyes, he is able to read books held no closer than 0.305 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters? 1.51 and 1.46 was wrong
Suppose that you have farsighted eye such that your near point is 95 cm. As a...
Suppose that you have farsighted eye such that your near point is 95 cm. As a result you need a reading glass. What lens power (in D) must you wear so that a newspaper can be read at a distance of 25 cm? Assume the lens is very close to your eye.
A farsighted man uses
eyeglasses with a refractive power of 2.25 diopters. Wearing the
glasses 0.030 m from his eyes, he is able to read books held no
closer than 0.295 m from his eyes. He would like a prescription for
contact lenses to serve the same purpose. What is the correct
contact lens prescription, in diopters?
9. A farsighted man uses eyeglasses with a refractive power of 2.25 diopters. Wearing the glasses 0.030 m from his eyes, he is...
A particular patient's eyes are unable to focus on objects closer than 34.5 cm and corrected lenses are to be prescribed so that the patient can focus on objects 22.0 cm from their eyes HINT (a) is the patient nearsighted or farsighted? O nearsighted O farsighted (b) If contact lenses are to be prescribed, determine the required lens power (in diopters). diopters (c) veglasses are to be prescribed instead and the distance between the eyes and the lenses is 1.80...
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 67 cm, which makes it difficult for the physicist to read books and journals. Find the focal length and power of a lens that will correct this presbyopia for a reading distance of 25 cm, when worn 2 cm in front of the eye focal length: cm diopters power Is this a converging or a diverging lens? converging diverging
A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 87 cm, which makes it difficult for the physicist to read books and journals. Find the focal length and power of a lens that will correct this presbyopia for a reading distance of 25 cm, when worn 2 cm in front of the eye. focal length: cm power: diopters Is this a converging or a diverging lens? diverging converging
Most questions answered within 3 hours.
-
An entomologist discovers a dung beetle rolling a ball of dung
along the ground, and decides...
asked 1 hour ago -
Humans have used horses for transportation for millions of
years. Therefore, they will use horses for...
asked 3 hours ago -
The following are the Jensen Corporation's unit costs of making
and selling an item at a...
asked 4 hours ago -
Does direct Medicare reimbursement of Advanced practice nurses
increase access to their services?
asked 4 hours ago -
List and explain why a company would choose to use a
published
compensation survey vs. creating...
asked 5 hours ago -
A discrete random variable X can take values from 1 to 10. Find
the variance of...
asked 5 hours ago -
The primary financial goal of a corporation is to maximize:
shareholders wealth.
earnings per share.
stock...
asked 5 hours ago -
determine whether the vectors u=(1,2,3,), v=(-2,1,0) and
w=(1,0,1) are linearly dependent or independent.
asked 5 hours ago -
python
Define a function called print_values which takes a dictionary
object as a parameter. The function...
asked 6 hours ago -
In Chapter 1 you created a program named Triangle in
which you displayed a seven-line triangle...
asked 6 hours ago -
Research question: What are the differences between separately
stated and non separately stated transactions in an...
asked 6 hours ago -
By using Arduino write a code that connects two LEDs to two
push-buttons. Each button controls...
asked 7 hours ago