A) \[{{179}^{o}}\]
B) \[{{90}^{o}}\]
C) \[{{0.50}^{o}}\]
D) None of these
Correct Answer: C
Solution :
Option [c] is correct. Explanation: A Fresnel Biprism is a thin double prism placed base to base and have very small refracting angle \[({{0.5}^{o}})\]
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