Light can be polarized by: reflection double refraction scattering of light
Correct answer: E. I, II and III
- A. I only
- B. II only
- C. III only
- D. I and II only
- E. I, II and III
Explanation
1. Scattering: When light interacts with particles or molecules in a medium, it can be scattered. Depending on the scattering mechanism, polarization can occur.2. Double refraction: Double refraction, also known as birefringence, is a property exhibited by certain transparent materials like calcite. In such materials, light is split into two beams, each polarized differently. This phenomenon is often used to polarize light.3. Reflection: When light reflects off a surface, the reflected light can be partially polarized, especially if the surface is non-metallic and the angle of incidence is specific (known as Brewster's angle). This polarized reflection is commonly used in polarizing filters.
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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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