Figure 2.4 Figure 2.6

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Figure 2.4 Figure 2.6

$Two medical students, Lynn and Bob, decide to build their own endoscopes. Along the way, they ask themselves some basic questions about the operation of the device. (a) What is the glass fibers if the material that surrounds the fibers has an index of refraction no - 1.5 and the optical fibers themselves have n, -1.65 (Figure P2.6)? (b) Bob twists Lynns scope into a cork- screw shape (Figure P2.4a). She retaliates by tying his scope into a knot (Figure P2.4b). He then disassembles one of the ends of her scope and scrambles the order of the fibers (Figure P2.4c). She does the same for the fiber bundle that transmits his light source. Do any of these four manipulations interfere with the operation of the scopes? Explain why or why not.$

Figure 2.4 Figure 2.6

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Answer 1

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Principle of working of optical fibre is based upon the phenomenon of total internal reflection in and a single optical fibre comprises of numerous strands of quartz fibre. There will be no interference of any manipulation because light suffers multiple total internal reflections without getting affected by the orientation of wire. mo = f-S = 0.901, I-GS に654

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