Which one of the following cannot be polarized ?
Correct answer: D. sound waves
- A. radio waves
- B. ultraviolot rays
- C. X-rays
- D. sound waves
Explanation
Polarization is possible only for transverse waves because it restricts the direction of vibration perpendicular to propagation. Sound in air is longitudinal, with particles vibrating along the direction of travel, so it cannot be plane-polarized. Students may choose radio waves because they are invisible, but radio waves are transverse electromagnetic waves and can be polarized.
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About Optics
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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