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leung_po_chuen
2021-01-23 00:38:58

https://intl.siyavula.com/read/science/grade-11/geometrical-optics/05-geometrical-optics-07
leung_po_chuen
2021-01-23 00:40:33

a) slope = 1.53 => refractive index of the glass
leung_po_chuen
2021-01-23 00:46:58

b) arsin = 1/1.53=40.81
leung_po_chuen
2021-01-23 00:48:00

c) He is wrong. Total internal reflection will only occur when the light is going from glass to air. Therefore if the light is coming from air to glass, total internal reflection will never occur.

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