A plane polarized blue light ray is incident on a prism such that there is no reflection from the surface of the prism. The angle of deviation of the emergent ray is $\delta ={60}^{\mathrm{o}}$ (see Figure-$1$). The angle of minimum deviation for red light from the same prism is ${\delta }_{\min }={30}^{\mathrm{o}}$ (see Figure-$2$). The refractive index of the prism material for blue light is $\sqrt{3}$. Which of the following statement(s) is(are) correct?

• Correct answer
  A

  The blue light is polarized in the plane of incidence
• B

  The angle of the prism is ${45}^{\mathrm{o}}$
• Correct answer
  C

  The refractive index of the material of the prism for red light is $\sqrt{2}$
• Correct answer
  D

  The angle of refraction for blue light in air at the exit plane of the prism is ${60}^{\mathrm{o}}$

Hence, the correct answer is options: 'A', 'C', 'D'.