Determine what is the focal length of each lens

Assignment Help Physics
Reference no: EM13543217

A person with bifocal vision has a prescription of -1.75D/+1.50D, which represents the refractive power of the lenses to correct myopia and presbyopia, respectively. each lens acts separately.

A) What is the focal length of each lens?

B) which lens is convergent? how does it correct vision?

C) which lens is divergent? how does it correct vision?

D) If an object is held at 25 cm away, what are the person's near and far points?

Reference no: EM13543217

Questions Cloud

Pressure the beam exerts on a surface that absorbs : A beam of pions (Pi-mesons, with rest energy m(Pi)c^2=140 MeV) consisting of 10^10pions/cm^2s moves with speed such that the total energy of each pion is 10^5 MeV. What is the pressure the beam exerts on a surface that absorbs it and brings it to res..
Calculate the resultant force acting on susan : Susan (mass=52 kg) rides upward in an elevator while standing on a bathroom scale. The scale reads 575 N. Calculate the resultant force acting on Susan
Find the force the shoulder joint exerts on the humerus : The deltoid muscle connects the shoulder blade to the upper arm (humerus), and so contraction of the deltoid raises the arm, Find the force the shoulder joint exerts on the humerus
Explain a white precipitate formed when ammonium oxalate : An unknown solution of alkaline earth metal nitrates gave a white precipitate when an ammonium sulfate solution was added. After the precipitate was removed by centrifuging, a white precipitate formed when ammonium oxalate was added to the remaini..
Determine what is the focal length of each lens : A person with bifocal vision has a prescription of -1.75D/+1.50D, which represents the refractive power of the lenses to correct myopia and presbyopia, respectively. What is the focal length of each lens
Find the temperature of the hot filament : A certain lightbulb has a tungsten filament with a resistance of 19.5 ? when at 20.0°C and 142 ? when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature o..
Define the actual molarity of the naoh : Indicate how each of the following errors will affect the calculated molarity of acetic acid.(high,low or no effect) and explain why. 1) The actual molarity of the NaOH was .2000M rather than .3000M
Determine the angular momentum and torque acting : The position vector of a particle of mass 1 kg is given by rarrowbolditalic = 6 ihatbold + 3t2 jhatbold, where r is in meters and t is in seconds. Determine the angular momentum and torque acting on the particle about the origin.
What is the y-component of the velocity of the third piece : An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg moves up and to the left at an angle of ?1 = 19.0° above the –x axis with a speed of v1 = 27.8 m/s

Reviews

Write a Review

Physics Questions & Answers

  How far has the boat moved

A 4 kg dog stands on one end of a 20 kg boat. The dog is initially 6 m from the shore, How far has the boat moved after the dog has walked the 2m

  Evaluate the average power dissipated in the circuit

A circuit consists of a resistor in series with an inductor and an ac generator that supplies an rms voltage of 115 V. Find the average power dissipated in the circuit

  What is the coefficient of kinetic friction

A block with mass m = 0.80 kg is forced against a horizontal spring of negligible mass, compressing the spring a distance of 0.20 m. When released, the block moves on a horizontal table top for 1.00 m before coming to rest. The spring constant k is 1..

  Determine the direction of the pucks acceleration

Two forces are acting on a 0.250-kg hockey puck as it slides along the ice. what will be the magnitude and direction of the puck\'s acceleration

  Find the phase constant of wave

Two sinusoidal waves of the same period, with amplitudes of 5.0 and 6.5 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 10.036 mm. The phase constant of the 5.0 mm wave is 0. What is th..

  Determine what is the density of the liquid

A U-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water. what is the density of the liquid

  Find the magnitude of electric force between these charges

Two charges Q1=+6mC and Q2=+4mC are separated horizontally on a straight line, find the magnitude of the electric force between these charges

  What sound intensity level will the crew member experience

A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 350. When a jet aircraft is taking off.

  Describe the change in flux

describe the change in flux through and the induced current in a loop of wire rotated in a uniform magnetic field

  Explain the five legal theories you could use in an attempt

Classify and explain the five legal theories you could use in an attempt to have the regulation declared invalid and overturned in court.

  Calculate this difference of heights in meters

A proton starts out moving horizontally from a positive plate to a negative plate of equal size and equal magnitude of charge. Calculate this difference of heights in meters

  How much energy is needed to complete this process

44.3 kg of ice is melted into water then raised to a temperture of 354.8 K. How much energy is needed to complete this process

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