A) \[{{3}^{o}}\]
B) \[{{4}^{o}}\]
C) \[{{3.5}^{o}}\]
D) \[{{2.5}^{o}}\]
E) \[{{5}^{o}}\]
Correct Answer: D
Solution :
Given refracting angle of prism P \[{{A}_{p}}={{3}^{o}}\] and refractive index of prism P \[{{\mu }_{p}}=1.5\] and refractive index of prism Q \[{{\mu }_{Q}}=1.6\] \[({{\mu }_{p}}-1){{A}_{p}}=({{\mu }_{Q}}-1){{A}_{Q}}\] \[(1.5-1){{3}^{o}}=(1.6-1){{A}_{Q}}\] or \[0.5\times 3=0.6\times {{A}_{Q}}\] or \[{{A}_{Q}}=\frac{0.5\times 3}{0.6}\] or \[{{A}_{Q}}={{2.5}^{o}}\]
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