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A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? Why? Draw a ray diagram to show the refraction of light in this situation.
Case study: A ray of light is incident obliquely on one face of a rectangular glass slab of refractive index 1.5. It travels through the slab and emerges from the opposite parallel face back into air. Which of the following statements correctly describes the path of the ray?
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