Physics · May / June 2024 · Paper 42 · Question 5
0625
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Fig. 5.1 shows a ray of yellow light incident on a glass prism ABC. yellow light B A C Fig. 5.1
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5(a)[1]
ray travels along the normal OR angle of incidence = 0(°)
5(b)(i)[2]
n = 1 / sin c OR (n =) 1 / sin c OR (n =) 1 / sin 42 (°)
1.5
5(b)(ii)[3]
ray reflected at BC AND no refracted ray
ray hits AC with angle of incidence = 0 °
correct refraction of candidate’s ray into air at AC
5(c)[2]
any two from:
high rates (of data transmission) / fast (data transmission)carry large amounts (of data / information)securelittle signal / data lossglass is transparent to (some) infrared
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