Yellow light is refracted through a prism producing minimum deviation. If $i_1$ and $i_2$ denote the angle of incidence and emergence for the prism,then ..........
- A$i_1 = i_2$
- B$i_1 > i_2$
- C$i_1 < i_2$
- D$i_1 + i_2 = 90^{\circ}$
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