1. A ray of light falls on an optical fiber with a refractive index of 1.98 and a length of 600,000 km; determine: a. The speed of light v inside the optical fiber. b. The time it takes for that ray of light to travel the length from end to end if the ray travels in a straight line within the optical fiber.

1. A ray of light falls on an optical fiber with a refractive index of 1.98 and a length of 600,000 km; determine: a. The speed of light v inside the optical fiber. b. The time it takes for that ray of light to travel the length from end to end if the ray travels in a straight line within the optical fiber.

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