Problem 5.2 of Textbook): A collimated beam of light from a helium-neon laser ( = 6 alls normally on a slit 0.5 mm wide. A lens of 50 cm focal length placed just behind the ocuses the diffracted light on a screen located at the focal distance. Calculate the distance he center of the diffraction pattern (central maximum) to (a) the first minimum and (b) th -econdary maximum. f another collimated beam of light is added in the above diffraction experiment, the resul

リ X rays of wave 0-3n m to und to length re tle ction are undergo second- or der at a Bragg Calcu la te the retle iting planes ang e U of 30° from a cys tal. interplan ar spacing of the enjatal?. in tle.

A Fraunhoter dittracHon pattevn of a Single SIit Ot Wiath 0-283 mm Is prodvced Using light Ot wavelengh 696nm. Fing the angle SUptended by Hhe central diffraihon maximum

-)か A sing ce wavelength be am of light of a double- sli+ Is incident perpendencularly arrangement. This distan ce H is tound that the on a be twe en the slit is 5.0 um . tirst diffraction mini mum eliminate' lis coincident with) the Or der maximum of double slit inteference the pattern. Cal culate the width of the slits