16. [-/1 Points] | DETAILS I | MY NOTES I SERPSE10 36.A.P.029. ASK YOUR TEACHER PRACTICE ANOTHER In an experiment, green light with wavelength 521 nm, sent through a pair of slits 31.3 pm apart, produces bright fringes 2.00 cm apart on a screen 1,20 m away. If the apparatus is now submerged in a tank containing a sugar solution with index of refraction 1.38, calculate the fringe separation for this same arrangement. L |em Need Help? |[Tassaing Submit Answer 17. [-/2 Points] DETAILS Y NOTE SERPSE10 36.A.P.037. | ASKYOUR TEACHER I | PRACTICE ANOTHER I In a Newton's-rings experiment, a plano-convex glass (n = 1.52) lens having radius r = 4.90 cm is placed on a flat plate as shown in the figure below. When light of wavelength 4 = 600 nm is incident normally, 58 bright rings are observed, with the last one precisely on the edge of the lens, A | | | R/ | | | _--'/ e 0 | @ (a) What is the radius R of curvature of the convex surface of the lens? T | m {b_} What is the focal length of the lens? | m L Need Help? [[ZRssde i 18. [-/1 Points] DETAILS Y NOTES SERPSE10 36.C.0P.029. ASK YOUR TEACHER PRACTICE ANOTHER Monochromatic light with a wavelength of 640 nm travels from left to right and is incident on a very narrow slit 5, as shown in the figure below. Viewing screen @ The light from this slit continues to a second screen a distance L = 1.70 m away from the first that has two parallel slits, S1 and 52. Slit 51 is horizontally across from slit 5, while 52 is displaced vertically downward a distance d. Light is detected at point P on a viewing screen to the right, and point P is equidistant from slits 51 and Sz' The intensity of the light at P is measured in three different cases: when slit S1 is closed, when slit S 2 is closed, and when both S and 5, are open. When either one of the slits is closed, the intensity of the light at P is the same. When both slits are open, the intensity is measured to be three times larger than in the case when either slit is closed. 1 What is the minimum possible value for the slit separation d {in mm)? [ I mm J Need Help? [[EResani Submit