1.

A part of a prism has been shown in the figure. If the angle of incidence at the surface I of the prism is 45∘, then the light ray is incident on the surface II at an angle of

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A part of a prism has been shown in the figure. If the angle of incidence at the surface I of the prism is 45, then the light ray is incident on the surface II at an angle of






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