A) zero
B) \[{{30}^{o}}\]
C) \[{{45}^{o}}\]
D) \[{{60}^{o}}\]
Correct Answer: B
Solution :
The refracting angle of prism \[A={{r}_{1}}+{{r}_{2}}\] For minimum deviation \[{{r}_{1}}={{r}_{2}}=r\] \[\therefore \] \[A=2r\] or \[r=\frac{A}{2}=\frac{{{60}^{o}}}{2}={{30}^{o}}\]You need to login to perform this action.
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