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

Classes of magnetic materials: nickel iron alloys, It contains 35%- 90% nic...

It contains 35%- 90% nickels. Higher is the nickel content higher is the permeability and lower is the magnetic saturation of the alloy. MN, CO, and Mo can also be added in trace q

Diffrence between isobaric process and isochoric process, Diffrence between...

Diffrence between isobaric process and isochoric process   A process in which the pressure is kept constant is known as isobaric process. (i.e.  ΔP=0) A process in which

Define the ray diagrams for lenses, Define the Ray Diagrams for Lenses Wh...

Define the Ray Diagrams for Lenses When drawing ray diagrams for thin lenses, we can assume that the lens is infinitely thin. Instead of considering refractions at each surface o

Work and energy, how can u call off the potential energy of an object when ...

how can u call off the potential energy of an object when the world is full of refrences and the world itself is relative? what would be the potential energy for a object lying in

What is a wave motion, Wave motion is the motion in which the particle/matt...

Wave motion is the motion in which the particle/matter remains at the point where it is.  But the disturbance/energy gets transfer from one point to the other.  The particle just o

Define the momentum and impulse, Define the Momentum and Impulse. Momentu...

Define the Momentum and Impulse. Momentum, p, is a measure of a car's motion.   p =  m  v where p is momentum in kg-m/s, m is mass in kilograms and v is the velocity of the ca

what is the formula of temperature gradient?, The  temp gradient  is s...

The  temp gradient  is similar to finding the slope of a line (when in two dimensions) Temp. Gradient= Change in Temp. value/Distance. dT/dx = (T2 - T1)/(X2 - X1)

Applications of superconductors, Applications of Superconductors - 1. El...

Applications of Superconductors - 1. Electrical Machines  2. Power Cables 3. Electro Magnets  4. Amplifiers 5. Cryotron 6. Magnetic Leviation 7. A 15 Phases

What is fundamental units, The physical value which does not depend on any ...

The physical value which does not depend on any other physical quantity is known as a fundamental physical quantity like length; mass and time are known as fundamental units.

Find the payback period, Your company's cost of capital is 12%. You are cur...

Your company's cost of capital is 12%. You are currently evaluating three projects that have the following cash flow streams: a.  Find the payback period, discounted paybac

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