Solved UPSC CDS/OTA Question
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Q · Waves and SoundEasy · 45s
Reverberation in an auditorium can be reduced by: 134
TopicWaves and Sound
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Soft materials absorb sound, reducing multiple reflections.
142
Final Answer: Option B — Using carpets and curtains
138