Monochromatic light with a wavelength of 6.4 e -7 meter passes through two narrow slits, producing an interference pattern on a screen 4.0 meters away. the first order bright band lines are 2.0 e -2 meters away from the central bright maxima. what is the distance between the slits? (5 points)

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.