Light of intensity $I_0$ is incident on air-water interface with an incident angle $\theta$. The angle between the refracted and the reflected beams is $90^{\circ}$. A polarization analyser is inserted in water at a distance of 5 cm from the interface. The axis of the analyser makes an angle $45^{\circ}$ with respect to the normal to the plane of incidence. Choose the correct statement(s) from the following.

• Correct answer
  A

  Intensity of the unpolarized light transmitted through the analyser is less than $I_0 / 2$
• Correct answer
  B

  Intensity of the light polarized along the normal to the plane of incidence transmitted through the analyser is less than $I_0 / 2$.
• C

  Intensity of the light polarized along the plane of incidence transmitted through the analyser is less than $I_0 / 2$.
• Correct answer
  D

  Intensity of the light polarized along the plane of incidence reflected from the interface is less than $I_0 / 2$.

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