A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (n_water= 1.333). A)76.2 $\degree$ B)67.5 $\degree$ C)54.4 $\degree$ D)48.6 $\degree$

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The Answer of A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (n_water= 1.333). A)76.2 $\degree$ B)67.5 $\degree$ C)54.4 $\degree$ D)48.6 $\degree$

A Light Beam Is Incident Upon a Still Water Surface °\degree°

A Light Beam Is Incident Upon a Still Water Surface $\degree$