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Chapter 5: Q26E (page 1106)

(a) At what angle above the horizontal is the sun if sunlight reflected from the surface of a calm lake is completely polarized? (b) What is the plane of the electric-field vector in the reflected light?

Short Answer

Expert verified
  1. The angle above the horizontal is
  2. The plane is perpendicular to the incident light plane, which is the horizontal plane.

Step by step solution

01

Brewster’s law

Brewster鈥檚 law for polarising angle;

Here,

02

Angle above the horizontal

Mediumn1is air

Mediumn2for water RI is 1.33

(a) So, the angle is;


03

Plane of the electric-field vector in the reflected light

(b) Hence, the plane is perpendicular to the incident light plane, which is the horizontal plane.

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