14. [-/3 Points] SERCP11 24.8.P.041.MI. 0/100 Submissions Used ASK YOUR TEACHER The hydrogen spectrum has a red line at 656 nm and a violet line at 434 nm. What angular separation between these two spectral lines is obtained with a diffraction grating that has 4454 lines/cm? (Assume that the light is incident normally on the grating.) first order separation P second order separation o third order separation o Need Help? [[Rsau ] [Cossrs) Submit Answer 15. [-/1 Points] SERCP11 24.8.P.045. 0/100 Submissions Used ASK YOUR TEACHER Light from an argon laser strikes a diffraction grating that has 5,654 grooves per centimeter. The central and first-order principal maxima are separated by 0.488 m on a wall 1.7 m from the grating. Determine the wavelength of the laser light. nm Need Help? Submit Answer 17. [-/2 Points] DETAILS MY NOTES SERCP11 24.9.P.052. 0/100 Submissions Used ASK YOUR TEACHER Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 41.0 with the axis of the polarizer. (a) What fraction of the original unpolarized light is transmitted through the analyzer? (Enter your answer to at least three decimal places.) (b) What fraction of the original light is absorbed by the analyzer? Need Help? Read It Submit Answer 18. [-/2 Points] DETAILS MY NOTES SERCP11 24.9.P.053. 0/100 Submissions Used ASK YOUR TEACHER The index of refraction of a glass plate is 1.64. What is the Brewster's angle when the plate is in the following substances? (a) air (b) water C Need Help? Read It Submit Answer 19. [-/2 Points] DETAILS MY NOTES SERCP11 24.9.P.055. 0/100 Submissions Used ASK YOUR TEACHER A light beam is incident on a piece of diamond (n = 2.419) at the Brewster's angle. (a) Find the value of Brewster's angle. (b) Find the angle of refraction for the transmitted ray. Need Help? Read It