Part A In a double-slit experiment, if the central diffraction peak contains 13 interference fringes, how many fringes are contained within each secondary diffraction peak (between m +1 and +2 in D sin 0 mA). Assume the first diffraction minimum occurs at an interference minimum. Express your answer as an integer. Η ΑΣΦ Submit Request Answer | Two 1.5x10-2-mm-wide slits are 4.0×10-² mm apart (center to center). ? Determine the spacing between interference fringes for 560 nm light on a screen 1.3 m away. Express your answer using two significant figures. Ay Submit Part B ΑΣΦ Request Answer w ? cm Determine the distance between the two diffraction minima on either side of the central maximum of the envelope. Express your answer using two significant figures.

Part A In a double-slit experiment, the fringe spacing on a screen 100 cm behind the slits is 4 mm. What will the fringe spacing be if the screen distance is doubled to 200 cm? O 16 mm O 2 mm O 8 mm O 4 mm Submit Request Answer Provide Feedback

Two slits spaced 0.0720 mm apart are 0.800 m from a screen. Coherent light of wavelength > passes through the two slits. In their interference pattern on the screen, the distance from the center of the central maximum to the first minimum is 3.00 mm. The intensity at the peak of the central maximum is 0.0300 W/m². Part A What is the intensity at point on the screen that is 2.00 mm from the center of the central maximum? Express your answer with the appropriate units. НА ? undo W I= 0.03141 m² Submit Previous Answers Request Answer x Incorrect; Try Again; 5 attempts remaining Part B What is the intensity at point on the screen that is 1.50 mm from the center of the central maximum? Express your answer with the appropriate units. ? A I = Value Units

How is the interference pattern created by eight evenly spaced slits of equal width different from the interference pattern created by two slits of with the same spacing and width that the eight slits have? O The bright fringes will be spaced farther apart in the two slit pattern. O All of these are true. There will be dim fringes between each pair of bright fringes for the eight slit pattern. The bright fringes are narrower for the two slit pattern.