For the given incident ray as shown in figure, the condition of tot...

For the given incident ray as shown in figure, the condition of total internal reflection of this ray the required refractive index of prism will be
(1) \( \frac{\sqrt{3}+1}{2} \)
(2) \( \frac{\sqrt{2}+1}{2} \)
(3) \( \sqrt{\frac{3}{2}} \)
(4) \( \sqrt{\frac{7}{6}} \)