Physics
(a) Out of the three rays (I, J, H) shown in the diagram, which ray will suffer Total Internal Reflection while inside the prism? (Critical angle of the prism is 42°.)
(b) Copy the diagram to complete the path of the ray which you have named in (a) till it comes out of the prism.
Refraction Plane Surfaces
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Answer
(a)
From the above diagram, it is visible that inside the prism, the angles of incidence of rays I, J and H are respectively 30˚, 60˚ and 30˚. Hence only the ray J will suffer total internal reflection.
(b)
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