Solved UPSC CDS/OTA Question
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Q · Waves and SoundModerate · 45s
Which of the following is not a mechanical wave?
TopicWaves and Sound
Question Typemultiple choice
DifficultyModerate
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Mechanical waves require a medium to propagate (like air, water, or solids). Sound, water, and seismic waves are mechanical. Light is an electromagnetic wave, which does not need a medium to propagate.
Final Answer: Option C - Light wave