Q. Which of the following is a characteristic of longitudinal waves?

निम्नलिखित में से कौन सी अनुदैर्ध्य तरंगों की विशेषता है?

A
Particles move perpendicular to wave direction
कण तरंग की दिशा में लंबवत गति करते हैं
B
Particles move parallel to wave direction
कण तरंग दिशा के समानांतर चलते हैं
C
Can travel through vacuum
निर्वात के माध्यम से यात्रा कर सकते हैं
D
Do not require a medium
किसी माध्यम की आवश्यकता नहीं है

Explanation

In longitudinal waves, particles of the medium vibrate in the same direction as the wave travels.
Examples: sound waves in air, seismic P-waves.
They require a medium and cannot travel in a vacuum.

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