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- Wave Optics
NEET · Physics · Wave Optics
Consider the following statements regarding unpolarized light...
Consider the following statements regarding unpolarized light incident on a transparent medium at Brewster's angle:
(A) The reflected and refracted rays are mutually perpendicular.
(B) The reflected wave is completely polarized with its electric field vector parallel to the plane of incidence.
(C) The transmitted wave is partially polarized.
(D) Brewster's angle is strictly independent of the color (wavelength) of the incident light.
Choose the correct option:
(A) The reflected and refracted rays are mutually perpendicular.
(B) The reflected wave is completely polarized with its electric field vector parallel to the plane of incidence.
(C) The transmitted wave is partially polarized.
(D) Brewster's angle is strictly independent of the color (wavelength) of the incident light.
Choose the correct option:
Options
- A(A) and (C) only
- B(A), (B) and (C) only
- C(A) and (D) only
- D(B), (C) and (D) only
Correct answer
A. (A) and (C) only
Step-by-step solution
At Brewster's angle, the reflected and refracted rays are perpendicular to each other, making statement (A) correct.
The reflected light is completely plane-polarized with its electric field vector perpendicular to the plane of incidence, so statement (B) is incorrect.
The transmitted (refracted) light is partially polarized, making statement (C) correct.
According to Brewster's law, . Since the refractive index depends on the wavelength of light (due to dispersion), Brewster's angle also depends on the color of the incident light. Thus, statement (D) is incorrect.
Therefore, only statements (A) and (C) are correct.
Answer: (A) and (C) only
The reflected light is completely plane-polarized with its electric field vector perpendicular to the plane of incidence, so statement (B) is incorrect.
The transmitted (refracted) light is partially polarized, making statement (C) correct.
According to Brewster's law, . Since the refractive index depends on the wavelength of light (due to dispersion), Brewster's angle also depends on the color of the incident light. Thus, statement (D) is incorrect.
Therefore, only statements (A) and (C) are correct.
Answer: (A) and (C) only