Answered: The nearpoint of an eye is 55 cm. A… | bartleby

Related questions

Question

The nearpoint of an eye is 55 cm. A corrective
lens is to be used to allow this eye to clearly
focus on objects 25 cm in front of it.
What should be the focal length of this
lens?
Answer in units of cm.
What is the power of the needed corrective
lens?
Answer in units of diopters.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

A photographer uses his camera, whose lens has a 60 mmmm focal length, to focus on an object 5.0 mm away. He then wants to take a picture of an object that is 40 cmcm away. How far must the lens move to focus on this second object?
A farsighted person has a near-point of 92 cm. To correct their vision so that they can see objects that are as close as 10 cm to their eye, what should be the focal length of the prescribed lens? Assume the lens will be 2 cm from the eye. Enter a number with units.
A symmetric double convex lens with a focal length of 26.0 cmcm is to be made from glass with an index of refraction of 1.52. What should be the radius of curvature for each surface? Express your answer to two significant figures and include the appropriate units.
A slide projector needs to create a 88-cmcm-high image of a 2.0-cmcm-tall slide. The screen is 340 cmcm from the slide. What focal length does the lens need? Assume that it is a thin lens. Express your answer with the appropriate units. Enter positive value if the lens is converging and negative value if the lens is diverging. How far should you place the lens from the slide? Express your answer with the appropriate units.
In order to heighten your enjoyment of your 29 carat blue diamond, you view it through a lens held close to your right eye at an angular magnification of 5.1. The distance of your right eye's near point is 25 cm. What is the focal length f of the lens in centimeters? f = ?cm
Problem 11: A pair of binoculars has an angular magnification of -7.5, when acting as a telescope (in most binoculars mirrors are used to make the image upright; we will not consider the effect of these mirrors here). If the binoculars have objective lenses with a focal length of 15 cm, what is the focal length, fe, of the eyepiece in centimeters?
A nearsighted person has a far point of 25.3cm and is prescribed contact lenses to correct her vision. What lens strength (a.k.a., lens power), in Diopters, should be prescribed? Give your answer using the usual convention of positive values for converging lenses and negative values for diverging lenses.