Question

Rew Constanta Part A When an x-ray beam is scared of the planes of a crystal, the scared beam c an reference pattern. This phenomenon is called Bag wing. For an observer to measure an m um two conditions have to be strong interference maximum atan Anxray ban w wvelength is directed at a crystal. As the angle of incidence increase you observe the angle 650 What is the s ong d between the planes of the crystal? Express your answer in nanometers to three significant figures. 1. The angle of incidence has to be equal to the angle 2. Therence in the beam's path from a source to en server for meghboring plans has to be e l to get mulle of the wavelengths AED O ? d- 0.198 2do) = form 1.2 . The path terence 2 ) can be determined from the dagram gure 1). The second condition is known as the Brage condition Submit Previoun Answer Degvest Answer X Incorrect: Try Again: 3 attempts remaining Figure - Part в Find the ange w ich you wil in a commum Express your answer in degrees to three significant figures O AGOR? deosedoso Submit

Answer 1

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we have given the X-Ray wavelength (X) = 0.2400m o = 65° Spacing between the planes of Crystal d=? adsid (0)=mx 2d Cos (0) = mx d=my 2cos(0) - (1 x 0.240 X10 2x Cos (65) ~ 2.84x10 tom ~ 0.284 X10 m or 0.284 nm To find the angle da at which you will find second maximum 2d Cos 2 = my for M=2 for m=2 cose2=mn zma (2)X0-24x109 ? 2x 0.284 Casos = ab eo 22 ~ Cos (0.240) = 32 20' is 10.284 ² 32° Appoi

Answer 2

above solution is fine but you have to use sin instead of cos