A glass slab can produce lateral …

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Meghna Thapar 5 years, 5 months ago
The ray makes and angle of 45∘ withthe normal to the surface. As we know that light travels in a straight line... The glass slab is denser and air is denser. Then light ray moves towards the normal and the next time the light ray move from denser to rarer so it moves away from the normal. In the case of emergent ray, the same refracted ray exits the slab into air, hence moving away from the normal. If we produce the incident ray, we can find that it is parallel to the emergent ray. This phenomenon is called Lateral Displacement. It occurs due to the Snell's Law which can be proved mathematically.
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