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As shown in figure, ray AB is refracted ...

As shown in figure, ray AB is refracted towards normal `N_1` and away from normal `N_2`,while entering from water to glass and glass to air respectively. It's respective angles of deviation are `15^@` and `30^@` and thickness of glass glass is 4 units. Now assuming upper edge of glass in x-y plane having equation `y=2` then equation of ray CDwill be [Given that equation of AB is `x + sqrt3 y = 2 sqrt3 (A) `x-y=2 ` (B) `y + `sqrt3` x = 2` (C) `(2+ `sqrt3`)x +y = 6-4 `sqrt3 `` (D) `( 2 - `sqrt3`)x + y = 6 - 4 `sqrt3``

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