A person is to be fitted with bifocals. She can see clearly when the object is between 32 cm and 2.1 m from the eye. The upper portions of the bifocals should be designed to enable ,What power should they have? Answer in units of diopter’s The lower portions of the bifocals should en- able her to see objects comfortably at 25 cm. What power should they have? Answer in units of diopters.

A person is to be fitted with bifocals. She can see clearly when the object is between 32 cm and 2.1 m from the eye. The upper portions of the bifocals should be designed to enable ,What power should they have? Answer in units of diopter’s The lower portions of the bifocals should en- able her to see objects comfortably at 25 cm. What power should they have? Answer in units of diopters.

Similar questions

A woman can see clearly with her right eye only whenobjects are between 45 cm and 135 cm away. Prescriptionbifocals should have what powers so that she can seedistant objects clearly (upper part) and be able to read abook 25 cm away (lower part) with her right eye? Assumethat the glasses will be 2.0 cm from the eye.
The lens-to-retina distance of a woman is 2.04 cm, and the relaxed power of her eye is 53.8 D. (a) What is her far point?How is the refracting power of a person's eye for distant vision related to their far point and lens-to-retina distance? m(b) What eyeglass power will allow her to see distant objects clearly, if her glasses are 1.80 cm from her eyes?D
A person's right eye can see objects clearly only if they are between 26 cm and 88 cm away. Express your answer using two significant figures. P= -3.57 Submit VE ΑΣΦ Part B X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer Submit do = 370.37 What will be the near point with the lens in place? Express your answer using two significant figures and include the appropriate units. cm Previous Answers Request Answer ? ? X Incorrect; Try Again; 5 attempts remaining D
I need help please.
Your camera’s zoom lens has an adjustable focal length ranging from 55 to 150 mm. Part (a) What is the maximum power of the lens, Pmax, in diopters? Part (b) What is the minimum power of the lens, Pmin, in diopters?
A simple refracting telescope with an objective lens with focal length 2.00m and and eye piece of with focal length of 2.0 cm is used to view Mars when it is 6 x 107km from the Earth. For the purposes of this question assume the unaided human eye can resolve objects 0.002 radians apart, what feature size can be seen on Mars with telescope? For the purpose of his problem assume that the diameter of the telescope is sufficiently large that diffraction does not play a role. o 2400 km o 1200 km o 3600 km o 120 km
What is the power ? of the eye when viewing an object 41.0 cm away? Assume the lens-to-retina distance is 2.00 cm , and express the answer in diopters. Power???
Your mother (without glasses) can see things clearly only if they are between 26.0 cm and 167 cm from her eyes. (a) If her glasses are to sit 2.20 cm from her eyes, determine the refracting power needed for glasses that will correct her myopia. (b) Determine your mother's near point when wearing these glasses. cm
Suppose a person's eyes have a relaxed power of 50.62 D. Assume a 2.00 cm distance from the retina to the lens of the eye. What is the far point of the person in m?
A person is to be fitted with bifocals. She can see clearly when the object is between 33.8 cm and 2.0 m from the eye. (a) The upper portions of the bifocals (see figure above) should be designed to enable her to see distant objects clearly. What power should they have? _____diopters (b) The lower portions of the bifocals should enable her to see objects located 25 cm in front of the eye. What power should they have? ______diopters