what is the angle of incidence when a ray of light strikes normally on a glass slab
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Angle of Incidence is the angle which an incident line or ray makes with a perpendicular to the surface at the point of incidence. If a Ray of light strikes the glass slab at 30°, then what will be the angle of refraction? What happens when a ray of light falls normally on a glass slab?
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i = r
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