Which of the following waves cannot be polarised?

1.	Which of the following waves cannot be polarised?
Answer» <html><body><p> Ultrasonic</p><br/><br/><p>Only transverse waves (such as radio, ultraviolet and <a href="https://interviewquestions.tuteehub.com/tag/infrared-515961" style="font-weight:bold;" target="_blank" title="Click to know more about INFRARED">INFRARED</a> waves) can be polarized since their vibrations can potentially <a href="https://interviewquestions.tuteehub.com/tag/occur-583012" style="font-weight:bold;" target="_blank" title="Click to know more about OCCUR">OCCUR</a> in all <a href="https://interviewquestions.tuteehub.com/tag/directions-955033" style="font-weight:bold;" target="_blank" title="Click to know more about DIRECTIONS">DIRECTIONS</a> perpendicular to the direction of travel. It is therefore possible to confine the vibrations to a single plane. However, <a href="https://interviewquestions.tuteehub.com/tag/sound-648690" style="font-weight:bold;" target="_blank" title="Click to know more about SOUND">SOUND</a> waves are longitudinal in which vibrations are parallel to the direction of travel of the <a href="https://interviewquestions.tuteehub.com/tag/wave-22399" style="font-weight:bold;" target="_blank" title="Click to know more about WAVE">WAVE</a>. The vibrations of a longitudinal wave occur along a single line, it is therefore not possible to confine that to a plane. So it cannot be polarized.</p></body></html>

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