subject
Physics, 09.04.2021 04:10 staxeeyy767

Sometimes a person cannot clearly see objects close up or far away. To correct this type of vision, bifocals are often used. The top half of the lens is used to view distant objects and the bottom half of the lens is used to view objects close to the eye. Bifocal lenses are used to correct his vision. A diverging lens is used in the top part of the lens to allow the person to clearly see distant objects. 1. What power lens (in diopters) should be used in the top half of the lens to allow her to clearly see distant objects?
2. What power lens (in diopters) should be used in the bottom half of the lens to allow him to clearly see objects 25 cm away?

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 14:40
During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?
Answers: 1
question
Physics, 22.06.2019 17:20
Select all the correct answers.which two statements are true? a moving magnetic field creates an electric field.a constant magnetic field creates an electric field.a constant electric field creates a magnetic field.a moving electric field creates a magnetic field.resetnext
Answers: 1
question
Physics, 22.06.2019 17:30
The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element
Answers: 1
question
Physics, 22.06.2019 18:00
Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?
Answers: 1
You know the right answer?
Sometimes a person cannot clearly see objects close up or far away. To correct this type of vision,...
Questions
question
Mathematics, 21.01.2021 01:00
question
Chemistry, 21.01.2021 01:00
question
Mathematics, 21.01.2021 01:00
question
English, 21.01.2021 01:00
question
English, 21.01.2021 01:00
Questions on the website: 13722361