Three glass prisms $A, B$ and $C$ of the same refractive index are placed in contact with each other as shown in the figure,with no air gap between the prisms. $A$ monochromatic ray of light $OP$ passes through the prism assembly and emerges as $QR$. The conditions of minimum deviation are satisfied in which prisms?
- A$A$ and $C$
- B$B$ and $C$
- C$A$ and $B$
- DIn all prisms $A, B$ and $C$
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