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A weakly guiding fibre with a particular graded core index has cut-off V-values for its 2nd, 3rd and 4th modes of 2.5, 3.9 and 5.2, respectively. The core radius is 4 microns, the core index is 1.47 and the cladding index is 1.46.
Determine the range of source wavelength values in nm for which the fibre is:
(a) single-mode
(b) two-mode,
(c) three-mode
(d) more than 3-mode.
Two positive lens L 1 and L 2 has the same focal length f>0. The distance between them is f/2. L 1 is placed to the left of L 2 . (a) An object is placed to the left of L1 wi
When a dielectric field is completely full in among charges rearrangement of the charges inside the dielectric medium takes place and the force among the same tow charge reduces by
Illustrates term total internal reflection in fiber optics? Total internal reflection in fiber optics: The field of fiber optics depends onto the total internal reflection o
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A skateboard track has a horizontal segment followed by a ramp that declines at a 45° angle, as shown. Normal 0 false false false EN-IN X-
Vince is determined to test law of gravity for himself walks a skyscraper 900ft. with zero initial velocity.Five seconds later, superman arrives at the scene and drive off the roof
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