Bifocal lenses are used to correct her vision what power

Assignment Help Physics

Reference no: EM13622697

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. A person can clearly see objects only if they are located between 36 cm and 187 cm away from her eyes. Bifocal lenses are used to correct her vision. What power lens (in diopters) should be used in the top half of the lens to allow her to clearly see distant objects?

Reference no: EM13622697

Questions Cloud

A common he-ne laser emits light of wavelength 633 nm with : a common he-ne laser emits light of wavelength 633 nm with a bandwidth of 1.00 x 108 hz. find the uncertainty in energy

A manufacturer of microwave ovens is trying to determine : a manufacturer of microwave ovens is trying to determine the length of warranty period it should attach to its

Total risk rank the following three stocks by their level : total risk rank the following three stocks by their level of total risk highest to lowest. rail haul has an average

Bifocal lenses are used to correct her vision what power : sometimes a person cannot clearly see objects close up or far away. to correct this type of vision bifocals are often

The player pulls his hand back during the impact at an : a baseball player catching a ball can soften the impact by pulling his hand back. assuming that a 5-oz ball reaches his

The need for health care among prisoners in the three types : a researcher wants to know whether the need for health care among prisoners varies according to the different types of

A cylindrical cistern constructed below ground level is 26m : a cylindrical cistern constructed below ground level is 2.6m in diameter and 2.0 m deep and is filled to the brim with

What load rating should be used to enter the timken company : a straight roller bearing is subjected to a radial load of 12 kn. the life is to be 4000 h at a speed of 750 revmin.

User Account

All Pages