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iPad 3:00 PM 100%-, a inst-fs-iad-prod.inscloudgate.net Facebook Optics P. Get Homew... American Ai..Rhapsody P...Amazon.co... Heels Optics Practice Problem Session 1. 2 mirrors are set 125° apart as in the diagram below. If the incident angle (0) of light on the first mirror is 50, at what angle is the beam reflected off the second mirror (0)? M2 125 Mi 2. What is the minimum index of refraction a material must have in order for there to be total internal reflection with a light ray with an incident angle of 42? 3. Your camera has a 35mm focal length lens on it. If the lens is held 42mm away from the camera sensor, a. how far away must and object be, in order to be in focus? b. If the image of the object has a height of 1.2cm, what is the objects height? 4. A diver under water (n-1.333) makes an incident angle oif 60° when looking up at his instructor. If he is 2.0m from the surface, and his instructor is 2.0meters from where the light ray passes the surface, at what level are the instructor's eyes?