Coherent light of frequency 6.38 x 10¹4 Hz passes through two thin slits and falls on a screen 90.0 cm away. You observe that the third bright fringe occurs at 3.11 cm on either side of the central bright fringe. How far apart are the two slits? Express your answer in millimeters. d= 4.08x10-2 mm Submit Previous Answers ✓ Correct Part B At what distance from the central bright fringe will the third dark fringe occur?

Light of wavelength 690 nm falls on two slits and produces an interference pattern in which the fourth-order fringe is 37 mm from the central fringe on a screen 2.5 m away. Part A What is the separation of the two slits? Express your answer using two significant figures. ΑΣΦ d=270 10 6 = ? Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining m

A plastic film with index of refraction 1.70 is applied to the surface of a car window to increase the reflectivity and thus to keep the car's interior cooler. The window glass has index of refraction 1.52. Part A What minimum thickness is required if light of wavelength 550 nm in air reflected from the two sides of the film is to interfere constructively? Express your answer with the appropriate units. h = 00 μµÅ Value Units ?

Two sources of electromagnetic waves (light waves) are emitting coherent waves at a frequency of 546 THz. These two sources are located a distance d apart and aimed at point A, as shown below. If the top source is located a distance 3.8 meters away from point A, find the minimum distance d that will give destructive interreference. Enter your answer in millimeters. 4₁1 Laser Laser d A