Question : Which of the following waves cannot be polarized?
Option 1: Radio
Option 2: Ultraviolet
Option 3: Infrared
Option 4: Ultrasonic
Correct Answer: Ultrasonic
Solution : The correct answer is Ultrasonic.
There are two distinct categories of waves: transverse waves and longitudinal waves. Unlike transverse waves, longitudinal waves are incapable of polarisation. Ultrasonic waves, falling under the longitudinal wave category, are consequently unable to undergo polarisation.
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