Previous year MCQs

General science UPPSC 2014 GS-I
Question

Sound waves do not travel in:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Vacuum

Detailed Solution:

The correct answer is “Vacuum”.
Sound waves are unable to propagate through the vacuums.

Sound waves are mechanical waves, meaning they require a medium (like a solid, liquid, or gas) to travel through. In a vacuum, there are no particles to vibrate, so sound cannot propagate.

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