What is the radius of curvature of the patients cornea

Assignment Help Physics
Reference no: EM13653448

When a patient is being fitted with contact lenses, thecurvature of the patient's cornea is measured with an instrumentknown as a keratometer. A lighted object is held near the eye, andthe keratometer measures the magnification of the image formed byreflection from the front of the cornea. If an object is held11.0 cm in front of a patient's eye,and the ratio of the height of the reflected image to that of theobject is 0.027, what is the radius of curvature of the patient's cornea?

________? mm

Reference no: EM13653448

Questions Cloud

An isolated capacitor of unknown capacitance : An isolated capacitor of unknown capacitance has been charged to apotential difference of 125 V. When thecharged capacitor is disconnected from the battery and thenconnected in parallel to an uncharged 10.0 µF capacitor, the voltage across the com..
What is the difference between arin, ripe, iana : What is the difference between ARIN, RIPE, IANA?
What is the tension in the cable closer tothe painter : A scaffold of mass 65 kg and length6.5 m is supported in a horizontalposition by a vertical cable at each end. What is the tension in the cable closer tothe painter
The organizational strategy : Where would database processing systems and spreadsheets fit into the organizational strategy
What is the radius of curvature of the patients cornea : When a patient is being fitted with contact lenses, thecurvature of the patient's cornea is measured with an instrumentknown as a keratometer. what is the radius of curvature of the patient's cornea
Explain the equilibrium composition of a reaction mixture : What is the equilibrium composition of a reaction mixture if we start with 0.500 mol each of H2 and I2 in a 1.0-L vessel. The reaction is H2(g) + I2(g) 2HI (g) Kc is 50.5 at 448 degree Celsius
Analyze decision support systems requirements : Analyze Decision support Systems requirements for any Organization
Compute how long is the telescope : A 43 power refracting telescope (wherepower is the angular magnification) has an eyepiece with a focallength of 4.2 cm. How long is the telescope
Explain vessel contains an unknown amount of pcl5 : A 1.00 L vessel contains an unknown amount of PCl5 and 0.020 mol each of PCl3 and Cl2 at equilibrium at 250?C. How many moles of PCl5 are in the vessel if Kc for this reaction is 0.0415 at 250?C.

Reviews

Write a Review

Physics Questions & Answers

  How many higher orders of maxima can be seen

A grating has 530 rulings/mm and is 5.4 mm wide.  How many higher orders of maxima can be seen

  A large plane having uniform charge density has an

a large plane having uniform charge density has an electric field just outside the plane that points directly toward

  Calculate the angular separation for the two lines

A diffraction grating with 2.507 X 10^3 lines/cm is used to examine the sodium spectrum. a) calculate the angular separation of the two closely spaced yellow lines of sodium (588.485 nm and 589.067 nm) in the first order. Answer in units of degree..

  What is the speed of the lighter car just after collision

When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. What is the speed of the lighter car just after collision

  Determine what was the kinetic energy of the car

A car of mass m = 1365 kg is pushed off a cliff of height h = 29 m. what was the kinetic energy of the car the instant after it left the cliff

  Obtain how high is the image

You place a 4.47-mm-high diamond on the axis of and 11.3 cm from a lens with focal length -6.79 cm. How high is the image

  Estimate how tall is the antenna

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 96.3 m. How tall is the antenna

  Find the energy of one of these photons

The highest-energy photons emitted by a hydrogen atom have an energy of 13.6 eV. Find the energy, in joules, of one of these photons

  What is the magnitude of the magnetic field

A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field, such that the normal to the coil is parallel to the magnetic field. The coil is then rotated through an angle of 90?, so that the normal becomes pe..

  What is the mass of heaviest person who can ridethe swing

A swing is made from a rope that will tolerate a maximum tension of8.00*102 N without breaking. Initially, the swing hangsvertically. The swing is then pulled back at an angle of60.0o with respect to the vertical and released fromrest. What is the ..

  What is the angular size in radians of the moon

The Moon is 3476 km in diameter and orbits the Earth at an average distance of 384,400 km. What is the angular size in radians of the Moon as seen from Earth

  Determine minimum radius of approach of alpha particle

Assume Rutherford used an alpha particle with a kinetic energy of 5.25MeV and fired them into a sheet of aluminum, one atom thick. Determine the minimum radius of approach

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