(III) A beam of light enters the end of an optic fiber asshown in Fig. 23–58. (a) Show that we can guarantee totalinternal reflection at the side surface of the material (atpoint A), if the index of refraction is greater than about1.42. In other words, regardless of the angle a, the lightbeam reflects back into the material at point A, assumingair outside. (b) What if the fiber were immersed in water?IBAirTransparentmaterialFIGURE 23-58 Problem 40.

Concept: The mathematical expression for law of refraction is given as Here is the refractive…

Answered: (III) A beam of light enters the end of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question-2. BCC Tantalum has an atomic radius of 0.1430 nm. Answer the following questions: (a) Calculate the lattice parameter a, b, c of the BCC structure. (b) Determine the interplanar spacings of (110), (200), (211), and (220) planes (c) Determine the expected angles for the first-order reflection of (110), (200), (211), and (220) planes when monochromatic x-ray radiation of a wavelength 0.1542 nm is used.
Two point sources of coherent light with a wavelength of 700 nm are near each other. The light from these sources is interfering in space around them. If you determine there is destructive interference between the two sources at a point 70.35 μm away from the second source, how far away from this point might the first source be? (Note that the image shown is not drawn to scale.) Source 1 74.20 μm o 77.175 um - 80.85 um ○ 80.85 μm 80.85 μm ? Source 2 70.35 μm destructive interference here
You have stated that the convective area is πr^2. Please explain this. πr^2 is the area for a circle, not a sphere. It should be 4πr^2 as this is equal to the surface area of the sphere as you have done correctly in the radiative area. A conv= 4πr^2*3*293-292 = 0.377 A rad = 4πr^2*0.2*5.67x10^-8*(292^4-291^4) = 0.144 I have tried to multiply the convective area by 4πr^2 instead of πr^2 but it is giving me an incorrect total heat transfer rate of 0.377+0.144 = 0.521 the correct answer is supposed to be 0.236
For FCC (face-centered cubic) platinum (Pt, Laving an atomic radius of 0.1387 nm). determine the expected diffraction angle () for the first-order reflection from the (311) planes, measured using monochromatic X-ray with a wavelength of 0.1542 mm.
To correct the vision of a hyperopic eye, a corrective lens should enable the wearer to focus on objects that are as close as the ideal near point. One way to think of this is that the corrective lens should take an object located at the ideal near point and create an image of it at the wearer's near point. (Remember that the wearer's eye is a short distance behind the corrective lens.) Draw a ray diagram showing this situation and find the necessary focal length of the lens in terms of the wearer's near point, the ideal near point, and the distance between the corrective lens and the eye.
estion 31 10 points Determine the theta, 0, angle for the first order reflection (n = 1) from these {111} planes if the X-ray has a wavelength of 0.154 nm? Moving to another question will save this response. 7 8 W Question ( Question

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