Tag: production and propagation of sound

Quizzes (0) Questions (56)

Questions Related to production and propagation of sound

Multiple choice physics world of sounds sound produced by humans propagation of sound production and propagation of sound

The physical quantity which oscillates in most waves is:

  1. Mass

  2. Energy

  3. Amplitude

  4. Wavelength
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mass of a particle executing a vibration in a wave is constant. The energy and wavelength in a wave in the same medium remain constant. Amplitude of the wave varies with time although the peak value of  the amplitude is constant.

Multiple choice physics world of sounds sound produced by humans propagation of sound production and propagation of sound

The sound waves which cannot be heard by a human ear are called.

  1. Ultrasonic sounds

  2. Infrasonic sounds

  3. Extraordinary sounds

  4. Both (a) and (c)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Human ear has a hearing range of 20Hz to 20KHz.

Ultrasonic and Extraordinary sounds are out of this range but infrasonic sound is near to 20 Hz and can be heard by humans but with difficulty.

Multiple choice physics world of sounds sound produced by humans propagation of sound production and propagation of sound

When we hear a sound, we can identify it source from

  1. The frequency of the sound

  2. The amplitude of the sound

  3. The wavelength of the sound

  4. The overtones present in the sound
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Frequency of the sound is the characteristic of sound waves that helps us to distinguish between two different sounds. For example, sound produced by man generally have low frequency (i.e. low pitch) whereas that produced by woman have higher frequency (i.e. sharp tone). Thus we can distinguish between two sounds by hearing the frequency (pitch).

Multiple choice physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

Which of the following will produce sound through vibration.

  1. A plastic scale when bent over the edge of a bench

  2. Saying 'Ah' for few seconds

  3. Plucking a rubber string by fingers

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All vibration produces sound. In some cases vibrations are visible to our naked eyes but Observe that sound is produced by vibration in some cases they can only be felt not seen. In all the above activities sound can be produced.