Solved UPSC CDS/OTA Question
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Q · Waves and SoundEasy · 45s
In an open organ pipe, the fundamental frequency is f. What will be the frequency of the third harmonic? 90
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.
In open pipes, all harmonics are present: nth harmonic = n × fundamental.
98
Final Answer: Option C — 3f
95