Question

A patient has a near point of 6.1 m. With their outdated prescription, the closest sign...

A patient has a near point of 6.1 m. With their outdated prescription, the closest sign they can read clearly with corrective lenses is 1.2 m away. What is the focal length of the corrective lenses? (in m).

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
2. Correcting vision: quantitative. Corrective lenses work because the lens bends light such that it, combined...
2. Correcting vision: quantitative. Corrective lenses work because the lens bends light such that it, combined with the eye itself, light forms a clear image on the retina. Another way to think about this is that the corrective lens (glasses) form an image of the object at a location where the eye can see clearly without corrective lenses. For a nearsighted person viewing an object very far away (object at infinity), the lens corrective lens creates an image at the...
The near point of a patient's eye is 54.2 cm. (a) What should be the refractive...
The near point of a patient's eye is 54.2 cm. (a) What should be the refractive power ℛ of a corrective lens prescribed to enable the patient to clearly see an object at 23.0 cm? ℛ =  dpt (b) When using the new corrective glasses, the patient can see an object clearly at 26.8 cm but not at 23.0 cm. By how many diopters did the lens grinder miss the prescription? ? = dpt
A near sighted person has a far point of 75cm. that person gets corrective lenses, which...
A near sighted person has a far point of 75cm. that person gets corrective lenses, which rest 2cm from thier eyes, in order to give them a normal far point that is infintevly far away. however, those corrective lenses dont just change the persons far point. while wearing their glasses, what is this persons new near point. assumue near normal point to be 25cm A. 17.5 B. 19.5 C. 25 D 33.6 E 35.6cm
A near-sighted person has a far point of 75cm. That person gets corrective glasses, which rest...
A near-sighted person has a far point of 75cm. That person gets corrective glasses, which rest 2cm from their eyes, in order to give them a normal far point that is infinitely far away. However, those corrective lenses don't just change the person's far point. While wearing their glasses, what is this person's new near point (assume that without glasses, their near point is the normal 25cm)?
A near-sighted person has a far point of 95cm. That person gets corrective glasses, which rest...
A near-sighted person has a far point of 95cm. That person gets corrective glasses, which rest 2cm from their eyes, in order to give them a normal far point that is infinitely far away. However, those corrective lenses don't just change the person's far point. While wearing their glasses, what is this person's new near point (assume that without glasses, their near point is the normal 25cm)?)
A pair of glasses is designed for a person with a far-point distance of 4 m...
A pair of glasses is designed for a person with a far-point distance of 4 m so that she can read street signs 19.5 m away. (The far-point distance is the distance from the eye at which you are just able to properly focus a distant object.) (a) If the glasses are to be worn 1.0 cm from her eyes, what is the needed focal length? Answer: -5.02 m (b) Compare this focal length (find the percent difference) to the...
What power of spectacle lens is needed to allow a farsighted person, whose near point is...
What power of spectacle lens is needed to allow a farsighted person, whose near point is 2.50 m, to see an object clearly that is 20.0 cm away? Assume the spectacle (corrective) lens is held 2 cm away from the eye by eyeglass frames.
A person is farsighted and has near point of 50 cm. Retina is at a distance...
A person is farsighted and has near point of 50 cm. Retina is at a distance L = 1.7 cm. When wearing contact lenses and reading a book 30 cm in front of the eye, what is the object distance for the lenses? What is the desired image distance? Is the magnitude of the image distance a minimum, maximum, or the only acceptable image distance? Find the focal length and refractive power of the contact lens that will fix this...
In order to see objects at different distances clearly, a person's eyes must be able to...
In order to see objects at different distances clearly, a person's eyes must be able to adjust the focal length of their lenses. If person can't achieve the full range of focal lengths, they will require corrective lenses to have "normal" vision. The corrective lenses in glasses usually sit about 2cm from a person's eyes. Part A: Someone who is nearsighted cannot see clear images of objects far away. One such person is unable to see things further than 5...
The uncorrected eye. For the following questions, assume that the distance between the eye lens and...
The uncorrected eye. For the following questions, assume that the distance between the eye lens and the retina is 1.70 cm. In other words, since the image is always formed on the retina, the distance between the lens and the image is always 1.70 cm. Also note that, as is seen in the ray diagram, since the eye lens is converging and the image is on the opposite side of the lens compared to the object, the image is always...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT