1) Wave speed is determined by a) the medium it travels through b) the source of the wave c) wavelength d) frequency 2) Wave frequency is determined by a) wavelength b) frequency c) the medium it travels through d) the source of the wave 3) Waves on a string that travel to a fixed end a) reflect 180° out of phase b) reflect in phase c) do not reflect 4) An antinode is the part of a standing wave a) that moves the most b) that moves the least 5) Galileo's attempt to measure the speed of light was hindered by a) reaction time b) poor eyesight c) the Inquisition 6) Red and green light mix to form a) brown light b) cyan light c) yellow light d) magenta light 7) Magenta and yellow pigments mix to form a) green b) brown c) red d) blue 8) Fermat's principle states that a) light always travels the shortest distance path between two points b) light always travels the path that takes the least amount of time c) light carefully chooses a path after checking Waze 9) In optics, the incident angle is always measured a) between the incident ray and the surface b) between the incident ray and the normal to the surface c) between the reflected ray and the surface d) between the refracted ray and the normal to the surface 10) Virtual images are ALWAYS formed by a) plane mirrors and convex mirrors b) plane mirrors and concave mirrors c) concave mirrors and convex mirrors 11) Real images formed by a concave mirror are always a) upright b) inverted 12) Magnification equals a) ho/hi b) di/do c) -do/di d) hi/ho 13) Which of the following is NOT a ray diagram rule for concave mirrors? a) A ray initially parallel to the principal axis reflects through the focal point. b) A ray initially parallel to the principal axis reflects through the center. c) A ray that initially passes through the focal point emerges parallel to the principal axis. d) A ray that travels along a line that passes through the center reflects back on itself. 14) A makeup used to magnify your face is a a) plane mirror b) concave mirror c) convex mirror

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