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- Do it directly considering the diffraction formula.A plane wave of wavelength 6000nm normally falls on strigity slit width of 0.20mm. Calculate the total agular with of the central maxumum and also the linear width as observed on a screen 3m awayA beam of x-ray is diffracted by a crystal. If the glancing angle is 8for second order and the separation between two atomic planes is 2.25 x 10^-10 m,calculate the wavelength of the incident X-ray.
- Determine the expected diffraction angle for the first-order reflection from the (110) set of planes for FCC iron when monochromatic radiation of wavelength 0.1542 nm is used. (Given the atomic radius of iron is 0.126 nm)EX. (2): Compute the cut-off parameter and the number of modes 1.54 and n2 (cladding) 1.5, core radius 25 supported by a fiber n₁ (core) um and operating wavelength is 1300nm. Ans. : 2π V = 2²-a N₁ λ =Copper Kα1X-rays have a wavelength of 0.15406 nm. What is the interplanar spacing d, for the (200) planes in iron when the Bragg angle θ is 32.52 ̊ (assuming n=1, first-order diffraction)?