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Sound and Waves – GK Quiz with Answers – Level 3

Advanced physics GK on sound and waves, covering echo and reverberation, the speed of sound in different media, SONAR, ultrasound uses and the hearing ranges of humans and animals.

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Choose Normal practice or a Simulated test.

Questions, answer key and solutions.

Questions
50
Duration
35 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 35-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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How the two modes differ
No account needed

Normal

Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 35 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Sound and Waves Physics GK Practice Quiz: Echo, SONAR and Ultrasound

This Level 3 Sound and Waves GK quiz on Aptitude360 helps you check whether you can apply the physics of sound to statement-based, match-the-following and sequence questions. It covers echo and reverberation, SONAR, medical ultrasound, hearing ranges of humans and animals, and the speed of sound in different media. The questions reward exact conceptual understanding rather than recall of definitions.

Topics covered in this Sound and Waves Level 3 set

  • How sound is produced by vibration and why it needs a medium
  • Back-and-forth motion of air particles along the direction in which sound travels
  • Speed of sound in steel, water and air, and how temperature affects it
  • Echo, the persistence of hearing and the minimum distance needed for a distinct echo
  • Reverberation in large halls and how it is reduced
  • Pitch, loudness, frequency and amplitude
  • SONAR, medical ultrasound imaging and breaking kidney stones
  • Infrasound and ultrasound in animals such as bats, dolphins, porpoises, whales and rhinoceroses

Key sound concepts to revise before this level

  • Pitch depends on frequency, while loudness depends on amplitude
  • Among the materials tested here, sound travels fastest in steel, slower in water and slowest in air
  • The speed of sound in air rises as the temperature rises
  • SONAR uses ultrasonic waves, not infrasonic waves
  • Sound is a mechanical wave and cannot travel through a vacuum, unlike light

Revision tips for sound and waves GK questions

  • Keep separate lists of animals linked with infrasound and with ultrasound, since match-type questions often pair them
  • Remember that the minimum echo distance comes from the speed of sound, so it changes with temperature
  • Read every statement fully, because many options differ by a single word such as infrasonic or ultrasonic

Who should take this sound and waves quiz

This set suits general awareness aspirants who have finished the earlier levels and want to test deeper physics GK on sound before competitive exams.

FAQs about Sound and Waves – GK Quiz with Answers – Level 3

What is the difference between pitch and loudness of sound?
Pitch depends on the frequency of a sound, so a higher frequency gives a higher pitch. Loudness depends on the amplitude, so a larger amplitude gives a louder sound.
Why can sound not travel through a vacuum?
Sound is a mechanical wave that needs particles of a medium to vibrate and pass the disturbance along. A vacuum has no particles, so sound cannot travel through it, whereas light can.
What is the minimum distance to hear an echo?
The sensation of a sound stays in the brain for about one-tenth of a second, so the reflecting surface must be at least about 17.2 m away in air at 22 °C. This distance changes with temperature because the speed of sound changes.
What is the audible range of human hearing?
A typical human ear hears sounds from about 20 Hz to 20 kHz. Sound below this range is called infrasound and sound above it is called ultrasound.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Sound and Waves GK Level 35035 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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