Q15 of 30 Page 1

Two monochromatic rays of light are incident normally on the face AB of an isosceles right-angled prism ABC. The refractive indices of the glass prism for the two rays '1' and '2' are respectively 1.35 and 1.45. Trace the path of these rays after entering the prism.

Given: -


The refractive indices of the material of the prism


For ray 1, = 1.35,


For ray 2, = 1.45,


Observations: -



For Ray 1,


TIR is not occurring as,



So the ray will get transmitted through the face AC as shown in the diagram


For Ray 2,


TIR is occurring as,



So, the ray will be reflected inside and will escape through the face BC


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