1.

The ray diagram could be correct                           [CPMT 1988]

A.            If \[{{n}_{1}}={{n}_{2}}={{n}_{g}}\]                                
B.            If \[{{n}_{1}}={{n}_{2}}\] and \[{{n}_{1}}<{{n}_{g}}\]
C.            If  \[{{n}_{1}}={{n}_{2}}\] and \[{{n}_{1}}>{{n}_{g}}\]          
D.            Under no circumstances
Answer» D.            Under no circumstances


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