The refractive index of a prism is 1.6. When the prism is immersed in a liquid of 1.2 refractive index, then the change in the angle of minimum deviation will be _______.
(Assume prism is equilateral) Given \({\sin ^{ - 1}}\left( {\frac{4}{5}} \right) = 53^\circ \)
\({\sin ^{ - 1}}\left( {\frac{2}{3}} \right) = 41^\circ \)
1
19.8°
2
16.2°
3
36°
4
24°
5
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