Determine the radius of curvature of the cornea

Assignment Help Physics

Reference no: EM13321343

To fit a contact lens to a patient's eye, a keratometer can be usedto measure the curvature of the cornea-the front surface of theeye. This instrument places an illuminated object of known size ata known distance p from the cornea, which then reflects some lightfrom the object, forming an image of it. The magnification M of theimage is measured by using a small viewing telescope that allows acomparison of the image formed by the cornea with a secondcalibrated image projected into the field of view by a prismarrangement. Determine the radius of curvature of the cornea when p=29.0 and M=0.0160.

___________mm

Reference no: EM13321343

Questions Cloud

Explain the value for kc at 400°c for the forward reaction : The decomposition of ammonia is: 2 NH3(g) ?? N2(g) + 3 H2(g). If the partial pressure of ammonia is 1.6 × 10-3 atm and the partial pressures of N2 and H2 are each 0.25 atm at equilibrium, what is the value for Kc at 400°C for the forward reaction

What are some examples of welfare gains and welfare losses : What are some examples of welfare gains and welfare losses that can result from the formation of international joint ventures among competing businesses?

How can trade liberalization exist on a nondiscriminatory : How can trade liberalization exist on a nondiscriminatory basis versus a discriminatory basis? What are some actual examples of each?

Explain flash chromatography or chromatotron : Which separation technique do you think will be fastest, flash chromatography or chromatotron. Explain.

Determine the radius of curvature of the cornea : To fit a contact lens to a patient's eye, a keratometer can be usedto measure the curvature of the cornea-the front surface of theeye. Determine the radius of curvature of the cornea

Capacity to apply this theory to the car industry : Capacity to apply this theory to the car industry.

Define what is the ph of a solution made by mixing : What is the pH of a solution made by mixing 100.00 mL of 0.20 M HCl with 50.00 mL of 0.10 M HCl. Assume that the volumes are additive.

Find the steady-state concentration of pollution in the lake : A lake with constant volume 10X10^6 m^3 is fed by a pollution-free stream with flow rate 50 m^3/s. A factory dumps 5m^3/s of a neoconservative waste with concentration 100 mg/L into the lake.

Explain what is the value of ka for hf : The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 °C is 2.03. What is the value of Ka for HF

User Account

All Pages