Unpolarized light of intensity \(I_0\) is incident on surface of a block of glass at Brewster's angle. In that case, which one of the following statements is true ?
Show Hint
- transmitted light is partially polarized with intensity \(I_0/2\).
- transmitted light is completely polarized with intensity less than \(I_0/2\).
- reflected light is completely polarized with intensity less than \(I_0/2\).
- reflected light is partially polarized with intensity \(I_0/2\).
The Correct Option is C
Solution and Explanation
Unpolarized light can be split into two equal components of \(I_0/2\) each (parallel and perpendicular to the plane of incidence). The parallel component is not reflected at all; only part of the perpendicular component (about 15 percent for glass) is reflected.
So the reflected intensity is less than \(I_0/2\), and the transmitted light is partially polarized with intensity greater than \(I_0/2\).
Thus statement (3) is true.
Answer: (3) reflected light is completely polarized with intensity less than \(I_0/2\)
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