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- The pupil of the eye is the circular opening through which light enters. Its diameter can vary from about 8.00 mm to about 2.00 mm to control the intensity of the light reaching the interior. Calculate the angular resolution, Og , of the eye for light| that has a wavelength of 558 nm in both bright light and dim light. dim light: bright light: At which light level is diffraction less of a limiting factor in the sharpness of a person's vision? More information is needed to answer. Diffraction is equally a factor in both intensities of light. dim bright6 h00 red (X=700mm) lights are 15cm apart. Using 5mm as the diameter of your calculate the maximum distana you could stand from the ligheds & still ressive + them as seperate objedsA particular person's pupil is 4.5 mm in diameter, and the person's normal‑sighted eye is most sensitive at a wavelength of 552 nm. What is angular resolution ?R of the person's eye, in radians?
- An optical fibre core and cladding refractive indices are 1.45 and 1.44 respectively. Compute its numerical aperture.The limit to the eye's acuity is actually related to diffraction by the pupil. What is the angle between two just‑resolvable points of light for a 6.25 mm diameter pupil, assuming the average wavelength of 539 nm? angle between two points of light: ° Take the result to be the practical limit for the eye. What is the greatest possible distance a car can be from a person if he or she can resolve its two headlights, given they are 1.20 m apart? greatest distance at which headlights can be distinguished: m What is the distance between two just‑resolvable points held at an arm's length (0.750 m) from a person's eye? distance between two points 0.750 m from a person's eye:a) Estimate the limiting angle of resolution for this eye, assuming its resolution is limited only by diffraction. b) Determine the minimum separation distance d between two point sources that the eye can distinguish if the point sources are a distance L = 25 cm from the observe c) Find what diameter the pupil of a human eye must have for its limiting angle of resolution to be 0.6 minutes of arc (equal to 1.75 ✕ 10−4 rad) when the light has a wavelength of 515 nm. Assume that diffraction is the only limitation on resolution. Express your answer in millimeters. Hint
- A Fraunhoter dittracHon pattevn of a Single SIit Ot Wiath 0-283 mm Is prodvced Using light Ot wavelengh 696nm. Fing the angle SUptended by Hhe central diffraihon maximumPlot a graph of sin 81 versus sin Ə2 for your data 1. Use a curve fit to help determine a value for the index of refraction for the acrylic lens (n2). Assume that the index of refraction for air (na) is 1. Record your experimental value here: 2. If acrylic glass has a the oretical index of refraction of 1.49, what is the percent error on your e xperimental value?