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(0) 45 (c) 60° (d) 90° [NDA - 2006] 127....

(0) 45 (c) 60° (d) 90° [NDA - 2006] 127. In the figure shown u,, Mg, Mz, uy, and uç, are the refractive indices. u2 2 uz M4 I 3 4 of the mediums 1, 2, 3, 4 and 5 respectively. Consider the following: (1) un = 42 (2) uz = u 4 = 45 (3) uz

M5 (b) 1, 2 and 3 only (a) 1 and 2 only (d) 3 and 4 only (c) 1 and 3 only [NDA-2006] H orrect 2

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