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A rectangular block of glass ABCD has a ...

A rectangular block of glass ABCD has a refractive index 1.6. A pin is placed midway on the face AB (Fig. EP 9.12). When observed from the face AD, the pin shall

A

appear to be near A

B

appear to be near D

C

appear to be at the centre of AD.

D

not be seen at all.

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