Prism angle and refractive index for a prism are 60∘ and 1.414 respectively. Then what will be the Angle of minimum deviation?
30∘
n=sin(A+δm)2sin30∘
where n is the refractive index, δm is the angle of minimum deviation, A is the prism angle
⇒1.414=sin(60+δm)2sin30∘⇒sin(60+δm2)=0.707=sin45∘⇒60+δm2=45∘⇒δm=30∘