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 Form 3 Physics Refraction of Light Questions and Answers

Figure 9 shows a crosssection of an optical fiber made of two types of glass A and B. the refractive index of B is lower than that of A.
figrefraction8620201517.JPG
A ray of light enters the optical fiber at P and emerges from Q.
(i) Sketch the path of the ray through the fiber.
(ii) State the reason why light travels through the fiber as in (i) above.

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