PHYS 2002 : Practice Exam 3
Document Summary
Phys2002 spring 2012 practice exam 3 (chs. Which statement best describes what happens to lasers a and c? air. Choose the best answer: reflection, refraction and diffraction, refraction, diffraction and polarization, refraction, diffraction and interference, reflection, refraction and interference, refraction, polarization and interference, a coin is placed 8. 0 cm in front of a concave mirror. The mirror produces a real and inverted image that has a diameter 4. 0 times larger than that of the coin. What is the focal length of the lens: -4 cm, +4 cm, -8. 3 cm, -12 cm, none of the above, you are looking down from above at a room that is 3 m 3 m square. A laser sits in the middle of the south wall and fires a beam of light that reflects off a plane mirror hanging on the east wall. Upon reflection, the beam then strikes a target located at the northwest corner (see figure).
