Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · Waves and SoundEasy · 45s
Which one of the following parameters of sound wave remains constant when it travels from one medium to another? 112
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.
Frequency is source-dependent and doesn’t change with medium.
120
Final Answer: Option C — Frequency
117