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in optical fibre refractive index of inner parts is 1.68 and refractive index of outer part is 1.44 the numerical aperture of the of fibre is 1).5653 2).66533).76534).865

Answer» in optical fibre refractive index of inner parts is 1.68 and refractive index of outer part is 1.44 the numerical aperture of the of fibre is 1).5653 2).66533).76534).865


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