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When a Ray of Light Travels from Air to Glass Slab and Strikes the Surface Of Separation at 90°, Then It - Science and Technology 1

When a ray of light travels from air to glass slab and strikes the surface of separation at 90°, then it …………….
(a) bends towards normal
(b) bends away from normal
(c) passes unbent
(d) passes in zigzag way

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Solution

(c) passes unbent
In this case, the angle of incidence (i) is zero and so also the angle of refraction.

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