A laser is shone through a grating that has slits 1.0 x 10-6 meters apart. The result hits the wall 3 centimeters from the grating. The first order constructive interference is 2 centimeters from the central maximum. What is the wavelength of the laser? 3. A 400nm laser strikes a grating with 1.0 x 10-6 m slit separation. If the wall is 4 centimeters from the grating, how far is the first order from the central maximum, in centimeters