Answer Happy

1. You are performing a multiple-source interference experiment using two slits of width 1 μm that are separated by a center-to-center distance of 5 µm. You shine a green laser of wavelength 532 nm on the double slit and observe the combined interference and diffraction pattern on a distant screen. a. How many bright spots from the interference pattern are visible within the central maximum of the diffraction pattern? b. Will the number of visible bright spots from the interference pattern within the central maximum of the diffraction pattern increase, decrease, or remain the same if the slit width is doubled (that is, 2 µm) while keeping the distance between the slits the same? Explain. c. Will the number of visible bright spots from the interference pattern within the central maximum of the diffraction pattern increase, decrease, or remain the same if the slits are separated by twice the distance (that is, 10 µm) while keeping the width of the slits the same? Explain. d. What will happen to the number of visible bright spots from the interference pattern within the central maximum of the diffraction pattern if you use a red laser of wavelength 670 nm instead of the green laser? Explain.