OU answer the following a) A screen is placed at a certain distance from a narrow slit which is illuminated by a parallel beam of monochromatic light. What will you observe if you scan the screen with the help of a microscope?
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- (B) I Woy The figure shows two patterns projected on screens from shining a laser through a double slit apparatus. The black spots are the light from the laser. What could be the cause of the difference we see between setup A and setup B? Setup A has larger slit spacing or uses a laser with larger wavelength. Setup A has smaller slit spacing or uses a laser with smaller wavelength. Setup A has smaller slit spacing or uses a laser with larger wavelength. Setup A has larger slit spacing or uses a laser with smaller wavelength.3Using an optical system whose focal length etuals to the diameter of lens and K=0.6 in the air as shown in figure we will pattern the 500nm x 500 nm through the photoresist thickness of 1um. Calculate the max. allowable wavelength of optical system for the minimum resolution so f
- 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 piece of glass scrren is put at a distance R=10 cm from a 2 slit setup. The point call p on the image is 180 nanometers from the central maximum. distance d =0.1 mm is the space between slits. with this specific set up the 3rd bright spot in the interference pattern is exactly at point P. A) Wavlength of the laser with formalas shown. B)What is the intensity of the light at a point on the screen 140 mm from the central max. Express anser as a percentage of the intesity og central max.The semi-vertical angle of cone of the incident on the objective of microscope is is 20°. If the wavelength of incident light ray rays 660 A.U. Calculate the smallest distance be just between two paints which resolved.
- 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 maximumIn a biptism erpetiment the distance honen the slit and tocal plane of eyepiece is 1. Wavelength of light used is 6000 Å. When a ANVer lens is interposed between biprism and eyepiece the distance between images of the two virtual sources given by the lens in two different positions are 3.6 mm and 2.5 respectively. Calculate the fringe width.B3
- Calculabe the percentage decrease monochromatic intensity La when the light passes through the lager in which optical thickness egúaL to O:8 and a beam of radiátlon directed straight dowhward has normal optičal depth orin ci dent on 100 nm. is 8) Light of wave length slit. The slit is at distance ot a narrow a 0.5nm from a viewing scre en, where a ditf rachon pattern forms. The of tle slit is 0.2Mm. width Cal culate tle dis Tance be tween the tirst and third diffraction minima on tle ScreenLight is incident from medium I to medisum 2 at Brewster's angle equal to 55.4, and transmitted angle is 34.6, the permeability of medium 2 is 34. 1. Caleulate refractive indices for medium land medium 2 2. Calculate the reflection coefficient for spolarined. 3. Reflection coefficient for p- polarized.