What is the power of the lenses

Reference no: EM13320739

A person with a near point of 90 cm needs to read from a computer screen that is 40 cm from her eye.

(a) Find the focal length of the lenses in reading glasses that will produce an image of the screen at 90 cm from her eye.

= cm

(b) What is the power of the lenses?

= diopeters

Reference no: EM13320739

Questions Cloud

Find the resistive force exerted by the water on the boat : Each exerts a force of 600 N directed at a t= 20.0° anglerelative to the forward motion of the boat. If the boat moves withconstant velocity, find the resistive force exerted by the water on the boat.

Prepare a complete cash flow statement : Prepare a complete cash flow statement for the year ending December 31, 2013 using the indirect method. The statement must include all titles, headings, captions, sections, totals, subtotals and disclosures one would normally expect on the face o..

What is its temperature in degrees fahrenheit : You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 48.7%u2218C. what is its temperature in degrees Fahrenheit

Determine the coliform concentration at the public beach : An ocean outfall diffuser that discharges treated wastewater into the Atlantic Ocean is 5,000 m from a public beach. The wastewater contains 10^5 coliform bacteria per milliliter. The wastewater discharge flow rate is 0.3 m^3/s.

What is the power of the lenses : A person with a near point of 90 cm needs to read from a computer screen that is 40 cm from her eye. What is the power of the lenses

What is a system modification : What is a system modification, and what requirements are affected when a modification is made?

Explain the keplers third law : The average distance from the earth to the sun is called the astronomical unit (AU). does it obey Kepler's third law

Find the linear density of the string : The middle C string on a piano is under a tension of 882 N. The period and wavelength of a wave on this string are 3.82 10-3 s, Find the linear density of the string

Find where is the image : A convex mirror has a focal length of %u221219 cm. Where is the image if the image is upright and one-half the size of the object

User Account

All Pages