Physics · Science General

Acoustics and Sound Waves

2,160 Questions

Acoustics and sound waves deal with mechanical vibrations traveling through media like air and water. Key concepts include wave reflection, beats, echoes, the Mach number, and infrasound. These physics fundamentals are regularly tested in general science sections of multiple competitive exams.

Sound wave propagationEchoes and reflectionWave interferenceMach numberInfrasound frequency

Acoustics and Sound Waves Questions

Multiple choice

Audio refers to

  1. seeing with the eyes

  2. smelling with the nose

  3. hearing with the ears

  4. feeling with the skin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The term 'audio' comes from the Latin word 'audire', which means 'to hear'. It refers to anything related to sound or the sense of hearing.

Multiple choice

Why are sound waves considered as mechanical waves?

  1. The sound wave is a disturbance that is transported through a medium.

  2. The particles of sound waves vibrate in a direction perpendicular to the direction of propagation of wave.

  3. The particles of sound waves always tend to come back to their original positions when set in wave motion.

  4. All of the above

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Yes, it is the correct reason.

Multiple choice

The velocity of sound in any gas depends upon

  1. the wavelength of sound only

  2. the density and elasticity of the gas

  3. the intensity of sound waves only

  4. the amplitude and frequency of sound
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The velocity of sound in any gas depends upon the density and elasticity of the gas.