The refracting angle of a glass prism is 30^ . A ray is incident on one of the faces and is perpendicular to it. The angle of deviation between the incident ray and that leaves the prism is (Refractive index of glass =1.5) ( (30^ )=0.5, (48.6)=0.75 )

Step-by-step solution

Given, A=30^ , =1.5 and i₁=0^ Since, i₀ , therefore, r₁ is also equal to 0^ Further, since, r₁+r₂=A r₂=A=30^ Using Snell's Law, = i₂ r₂ 1.5= i₂ 30^ or i₂=1.5 30^ =1.5 1 2 =0.75 or i₂=1.5 30^ =1.5 1 2 =0.75 Now, the deviation, = (i₁+i₂ )-A=(0+48.6)-30=18.6^