im passes through a 3.9-1071 mm wide single slit and pattern on a screen that is 1.6 m away What is the distance between adjacent nodal lines? ) 15 10- em ()17:102 em () 26 cm ()17-10- m )15x10' em 017 a Question 47 (1 point) Listen Light of wavelength 600 nm passes through a double slit. Bright interference bands appear 6.0 mm apart on a screen at a fixed distance from the slits. What is the distance between the adjacent dark bands when the wavelength of light is changed to 450 nm? 8.0 mm 6.0 mm 40 mm 4.5 mm 22 mm Question 48 (1 point) Listen Binoculars and microscopes are frequently made with "coated optics" by adding a thin layer of transparent material to the exterior surface of the lens. If the coating has an index of n - 1.4 and the lens has a value of n = 1.5, rays 1 and 2 will totally destructively interfere if the path difference between rays 1 and 2 O is OX O equals the thickness of the film varies O iss Communication Question 49 (1 point) When light hits a medium with a lower index of refraction, the wave will ) speed up and bend towards the normal speed up and bend away from the normal )slow down and bend towards the normal slow down and bend away from the normal