Page 1 of 2 Physics 7C Quiz 2 rst Name Last Name 11) Section Show all work. Answers without suicient explanation/justication will not receive full credit. Leo is shining a 677 nm laser on two slits, with a slit distance of ,09 mm, creating an interference pattern on the Wall, which is 4 m away from the slits. He notices that there is an ant in the third bright spot from the center a) How far away from the center bright spot is the ant? Draw a picture of the interference pattern on the wall, labelling bright spots, dark spots, and the location of the ant, b) Now Leo begins to move one of the slits Very slowly toward the wall, at a speed of 11.25 X 10'6 rn/s, keeping the other one xed This makes bright spots oscillate between bright and dark, and vice versa. How long does it take for the center point to go from bright to bright again? (Hints: Before one of the slits begins to move, what is the difference in path length at the center spot? What will the path length difference be when the center spot is bright again?) (Note: This is basically how an interferometer works). Slits before Slits aer velocity 4 n+1 AD 1 , Ax=dsim9, y(x.t)=Asin(izl+va), d T This sludy mm was dammed by lmmlSSOX hum Cwmllemwm on W-VJ-Zll 03:95:2l (HES-93mg v = If, 1143mm\" = 21m, 1145,14\