Hello. I need the answers to the following questions. I do not need any answers if I already got something that says correct. Thanks

1 a and b

The diameter ofa thin wire is measured in a physics laboratory by a student. The wire is held vertically in a holding frame in front of the laser beam. The laser light diffracts on the Wire and produces a diffraction pattern on a white screen. The diffraction pattern is shown in the figure. The pattern is centered around the origin. ylcm) O xicml The wavelength of the laser light is 578 nm, and the screen is 1.89 m away from the wire. What is the diameter of the wire? (Hint: one of the higher order diffraction minima lines up with a well defined x-value. Also, it is perfectly safe to use the small angle approximation: sin(6) = tan(9)). ii The refractive index of a transparent material can be determined by measuring the critical angle when the solid is in air. If 6C: 40.3Cl what is the index of refraction of the material? 1.55 You are correct. . . Your receipt no. is 1645320 W 3 light ray strikes this material (from air) at an angle of 36.6 with respect to the normal of the surface. Calculate the angle of the reflected ray (in egrees . 3.66x101 You are correct. . . Your receipt no. is 164-2567 (Q m Calculate the angle of the refracted ray (in degrees). Incorrect. Tries 4/99 Previous Tries Assume now that the light ray exits the material. It strikes the material-air boundary at an angle of 36.6 with respect to the normal. What is the angle of the refracted ray? Incorrect. Tries 1/99 Previous Tries At what angle with respect to the vertical does a diver under the water see the sunset? (The index of refraction of water is 1.32.)The far point of an eye is 170 cm. A corrective lens is to be used to allow this eye to focus clearly on objects a great distance away. What should be the focal lenqth of this lens? r The near point of an eye is 78.5 cm. A corrective lens is to be used to allow this eye to focus clearly on objects at the distance of the healthy near Eoint. What should be the focal length of this lens? Incorrect. Tries 1/99 Previous Tries What is the power of the needed corrective lens in diopters? Incorrect. Tries 1/99 Previous Tries