Find the lowest refractive index of the material

Reference no: EM13250129

Some GRIN material is made in the form of a doughnut. The inside diameter (the diameter of the hole in the doughnut) is 34 cm and the outside diameter is 46 cm; the cross section of the ring, therefore, is 6.0 cm in diameter.

(a) If the average index is 1.6, what radial gradient is needed to keep a beam of light traveling along exactly in the center of the ring?

(b) What should be the highest, and the lowest refractive index of the material?

Reference no: EM13250129

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