Defects of vision and their correction, Physics

Defects of vision and their correction

There is a simple relationship between the focal length F ,the object distance P and the image distance Q of a thin lens fig(1).

1085_Defects of vision and their correction.png

2124_Defects of vision and their correction 2.png

1089_Defects of vision and their correction 3.png

If F measured in mete ,then 1/F is the lens strength in diopter(D).
-The focal length of a combination of tow lenses with focal length F1,and F2 is given by                        

1/F=1/F1+1/F2

Posted Date: 10/1/2012 9:00:10 AM | Location : United States







Related Discussions:- Defects of vision and their correction, Assignment Help, Ask Question on Defects of vision and their correction, Get Answer, Expert's Help, Defects of vision and their correction Discussions

Write discussion on Defects of vision and their correction
Your posts are moderated
Related Questions
how are "white dwarfs" explained in Fermi dirac statistics?

In case of dextro rotation we consider angle positive & in case of leavo rotatory we consider negative. But in Maths Rotation to left increases value of angle ( + ve)& towards righ

Charge and discharge characteristics of nickel cadmium cell: During charging and discharging the electrolyte acts only as an ionised conductor, transporting electrons from one

how potential barrier is formed at the pn junction diode

Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve

Displacement: - The modification in position of a body in a particular direction is called as displacement. It is a vector function and its unit in SI system is meter. Distanc

The idea that everything is made up of very small particles has been developed over many years supported by several experiments: (i)                Brownian motion :

Finding the centre of gravity of objects Secure a triangular file and place it on a table as a balancing point. Any sharp-edged device with a hat side might be used. Balance se

It having of a Cu plate coated with a thin layer of cuprous oxide (Cu2O). On this plate is laid a semi transparent thin film of silver. When light fall, the electrons emitt

A ray of white light in air passes by a glass plate. Refraction takes place. The direction in which the light is travelling changes. For what colour of light is the alteration in d