A polarizer reduces the intensity of unpolarized light by:
Correct answer: C. 50%
- A. 80%
- B. 60%
- C. 50%
- D. 40%
Explanation
C is the right option because A perfect polarizer can reduce the intensity of unpolarized light by half (50%). This occurs because unpolarized light consists of vibrations in all possible directions, and a polarizer transmits only those vibrations aligned with its transmission axis.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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