optical, Physics

Assignment Help:
Ask question #Minimum 4.
Determine the strength of a lens needed to allow a person with a far-sighted eye with a near point of Pnar= 2.0 m (near point means the closest distance for which an object can be imaged on the retina) to read comfortably at 0.25 m?

5. a) If an emmetrope has an accommodation of 53 D, what is the person''s near point?

b) If a former emmetrope wears reading glasses of +2D to read at a distance of 25 cm, what is the near point without glasses?


Get Answer words accepted#

Related Discussions:- optical

What do you mean by length contraction, Q. What do you mean by Length Contr...

Q. What do you mean by Length Contraction? The length of any object in a moving frame will appear for shortened in the direction of motion. The amount of contraction can be cal

State the law of conservation of electric charges, Q. State the law of cons...

Q. State the law of conservation of electric charges? The entirety charge in an isolated system always remains constant. For instance Uranium ( 92 U 238 ) can decay by emittin

Discovery of neutron, Write down a short note on the discovery of neutron. ...

Write down a short note on the discovery of neutron. Show the uses of radioisotopes.

Explain simple microscope, Simple Microscope: A simple microscope of ma...

Simple Microscope: A simple microscope of magnifying glass is a convex lens which form virtual erect and magnifying image of an object which is placed with in it's focal length

Discuss volt-ampere characteristics of a tunnel diode, Draw and discuss vol...

Draw and discuss volt-ampere characteristics of a tunnel diode. Ans:  Volt-ampere characteristics of a tunnel diode: The V-I characteristics of a tunnel diode are shown in fi

Closed and open systems in thermodynamics, In thermodynamics term what is t...

In thermodynamics term what is the meaning of the following terms? a) closed and Open systems b) Extensive and Intensive properties.

Electric field intensity, If small test charge is taken as positive than w...

If small test charge is taken as positive than why measured value of electric intensity be somewhat less than the actual value of elctric intensity and vica versa

Electric charges, Two charges eachof q=+2 micro coloumb are placed at the v...

Two charges eachof q=+2 micro coloumb are placed at the vertices Q and R of the triangle .the sum of sides PQ and PR is 12cm and their product is 32 cm_2 .the potential at point P

Synaptic normalization mechanism, Diagram of the network looks: (b)...

Diagram of the network looks: (b) When both x and y are large, i.e., both A and B are firing, w is increasing without bound. When one or both of x and y are small, w does n

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd