in a Young's double slit experiment the separation of the slits is 0.23 mm. The wavelength of the light is 557' hm. Determine the angle at which the third dark; fringe out from the centre occurs. Give 1your answer as a positive value. A person has a near-point of 34.5 cm. The}r View an object through a microscope with a relaxed eye. The focal length of the objective lens is 1.4 cm and the distance between the two lenses it 15.5 cm. The magnication achieved is -8?.0 . Determine the focal length of the eyepiece. A single slit is illuminated 1with light of wavelength 4T6 nrn. The Width of the slit is 1.0E-EI4 m. A diffraction pattern is formed on a screen at a distance of m m. Determine the width or the central bright peak. A telescope has a resolution of 4.16E-06 radians for light of wavelengthm. Calculate the aperture of the telescope.The work function of a metal surface is 4.53 e'u'. Find the maximum wavelength of light that can eject photons from the surface. The work function of a metal surface is 3.43 ev. UV light of wavelength 255 nm is incident on the metal. (a) Calculate the maximum kinetic energy of the photoelectrons in SI umits. select units v (b) Determine the maximum velocity of the photoelectrons.A person has a far-point of 24 m and a near-point of 25 cm. Assume a distance 01:24 cm between the lens and retina. {a} Determine the maximum refractive power of the eve. 41ft) oioptres v {m Determine the difference between the maximum and minimum refractive powers of the eve. Give your answer as a positive value. 3.96 oioptres v