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For a prism of refracting angle A and r...

For a prism of refracting angle A and refractive index `2` . Assume rays are incident at all angles of incidence `0^(@) lei le 90^(@)`. Ignore partial reflection.

`{:("Column I","Column II"),((A)A=15^(@),(p)"All rays are reflected back from the second surface."),((B)A = 45^(@),(q) "All rays are refracted into air from the second surface"),((C)A = 70^(@) , (r) "Some rays are reflected back from second surface ") , ((D) A = 50^(@), (s) "Some rays are refracted into air from the second surface"):}`

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The correct Answer is:
(A)-q (B)-r,s (C)-p (D) -r,s
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