Problem 3: Red light from the He-Ne laser I showed you in class passes through a double slit with slit width of 2.0 ?m. The wavelength of the red laser light is 632.8 nm and the distance from the double slit to the screen (where you observe the pattern) is R=2.0 m. a) Find the angular positions (in terms of angle ?) with respect to the central maximum (or 0th order bright fringe) for the first bright fringe, second bright fringe and third bright fringe. b) Find the linear positions in terms of meters with respect to the central maximum for the 1st,2nd and 3rd bright fringe. c) Find the angular positions (in terms if angle ?) with respect to the central maximum (or 0th order bright fringe) for the first dark fringe and second dark fringe.

Problem 3: Red light from the He-Ne laser I showed you in class passes through a double slit with slit width of 2.0 pm. The wavelength of the red laser light is 632.8 nm and the distance from the double slit to the screen {where you observe the pattern) is R=2.0 III. a} Find the angular positions (in terms of angle 6') with respect to the central maximum (or 0th order bright fringe) for the rst bright fringe, second bright hinge and third bright fringe. b') Find the linear positions in terms of meters with respect to the central maximum for the 1\