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Explain the phenomena of total internal reflection in right angle prism. |
Answer» SOLUTION :Prisms designed to bend light by `90^@` or by `180^@` make use of TOTAL internal reflection figure (a) and (b). In the first two cases, the critical angle `i_c` for the material of the prism MUST be less than `45^@`. Such a prism is also used to invert images without changing their SIZE figure (c). 
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