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Sound

9 PYQ across 4 exams · 1994–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1994 → CDS 2019 → NDA 2021 → CAPF 2024
19941 PYQ
CSEQ38
The pitch of the voice of women is in general…
20191 PYQ
CDSQ45
An echo is heard after 5 seconds of the production of sound which moves with a speed of 340 m/s. What is the distance of the mountain from t…
20212 PYQs
NDAQ138
Reverberation is a phenomenon associated with a…
NDAQ79
The sound created in a big hall persists because of the repeated reflections. The phenomenon is called…
20233 PYQs
CDSQ5
Sonic boom is produced when a source of sound travels at a speed :…
CDSQ35
In which of the following media is the speed of sound the maximum ?…
CDSQ6
A person burned a firecracker in front of a cliff and heard its echo 5 s after it burst. The distance of the cliff from the person, if the s…
20241 PYQ
CAPFQ25
Which one of the following is the audible range of hearing for humans?…
20251 PYQ
NDAQ149
We hear an echo due to…
Related concepts — explore their timelines too
AcousticsSpeed of soundFrequencyReflection
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