# Question: The far point of a certain nearsighted person is 90

The far point of a certain nearsighted person is 90 cm.

(a) Which type of contact lenses, (1) converging, (2) diverging, or (3) (2) diverging, or (3) bifocal, should an optometrist prescribe to enable the person to see more distant objects clearly? Explain.

(b) What would the power of the lenses be, in diopters?

(a) Which type of contact lenses, (1) converging, (2) diverging, or (3) (2) diverging, or (3) bifocal, should an optometrist prescribe to enable the person to see more distant objects clearly? Explain.

(b) What would the power of the lenses be, in diopters?

## Relevant Questions

The focal length of the objective lens of a compound microscope is 4.5 mm. The eyepiece has a focal length of 3.0 cm. If the distance between the lenses is 18 cm, what is the magnification of a viewed image? A specimen is 5.0 mm from the objective of a com-pound microscope that has a lens power of + 250 D. What must be the magnifying power of the eyepiece if the total magnification of the specimen is – 100 x? A telescope has an angular magnification of – 50 x and a barrel 1.02 m long. What are the focal lengths of the objective and the eyepiece? What is the resolution limit due to diffraction for the Hale telescope at Mount Palomar, with its 200-in.-diameter mirror, for light with a wavelength of 550 nm? Compare this value with the resolution limit for the European ...A radio telescope with a diameter of 300 m uses a wavelength of 4.0 m to observe a binary star system that is about 2.5 x 1018 km from the Earth. What is the mini-mum distance of two stars that can be distinguished by the ...Post your question