In: Physics
1) A 600 nm laser illuminates a double slit apparatus with a slit separation distance of 3.55 μm. The viewing screen is 1.50 meters behind the double slits. What is the distance (in meters) from the central bright fringe to the 3nd dark fringe?
2) A 600 nm laser illuminates a double slit apparatus with a slit separation distance of 3.55 μm. The viewing screen is 1.50 meters behind the double slits. What is the distance (in cm) between the 2nd and 3rd dark fringes?
please help me with both of them as I am completely lost on them.