question_answer

The angle of incidence for a ray of light at a refracting surface of a prism is \[\text{4}{{\text{5}}^{\text{o}}}\].The angle of prism is \[\text{6}{{\text{0}}^{\text{o}}}\]. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:         [NEET - 2016]

A)  \[{{45}^{o}},\,\frac{1}{\sqrt{2}}\]      

B)       \[{{30}^{\text{o}}}\text{,}\,\sqrt{2}\]

C)  \[{{45}^{\text{o}}}\text{,}\,\sqrt{2}\] 

D)       \[{{30}^{o}},\,\frac{1}{\sqrt{2}}\]

Correct Answer: B

Solution :

[b]