Wave Optics32524.44When light of wavelength λpasses through a single slit of width a, the first minimum is observed at angle θwhere sina=or 1sina=a−This will have no solution if <, so the maximum slit width if no minima are to be seen is 632nma==.8. 24.45(a) From Brewster’s law, the index of refraction is ()2tantan 48.01.11pn°=(b) From Snell’s law, 221sinsinnn1=, we obtain when 1p=( )12sisin48.0sin42.01.11nn°112n1.00sinp−−1=°Note that when p=290.0, p=°−as it should. 24.46Unpolarized light incident on a polarizer contains electric field vectors at all angles to the transmission axis of the polarizer. Malus’s law then gives the intensity of the transmitted light as ( )20avcosII=. Since the average value of 2cosis 12,theintensity of the light passed by the first polarizer is
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