Tag: production and propagation of sound

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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

State whether given statement is True or False
In humans, sound is produced because of the vibration of the larynx.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The larynx is located at the upper end of the windpipe. The vocal chords attached to the larynx, stretch it to create a passage for air. When air passes through this passage, the vocal chords vibrate and produce sound.

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

On what does the quality of voice depend ?

  1. Thickness of vocal chords

  2. Length of local chords

  3. Stiffness of vocal chords

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

The quality of voice depends on the length, thickness and stiffness of the vocal chords. Tight, thin and short vocal chords produce high pitched voice like that of females. Loose, thick and long vocal chords produce low - pitched voice like that of men.

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

Muscles attached to the vocal cords can make them

  1. tight only

  2. loose only

  3. both loose and tight as per requirement

  4. neither loose nor tight
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The muscles attached to the vocal cords can expand and contract, thus making them tight and loose. The voice quality changes depending on whether the vocal cords are tight or loose.

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

With the length of vocal chord, voice quality

  1. changes

  2. remains same

  3. may or may not change

  4. remains same but loudness changes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The voice quality changes as per the length of the vocal chords. Men have about 20 mm long vocal chords, whereas women have about 15 mm long vocal chords. Children have very short vocal chords. That attributes to the different voices of men, women and children.

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

Fill in the blank.

The length of the vocal chords in men and women is approximately _____ and _____ respectively.

  1. 15 mm, 20 mm

  2. 20 mm, 30 mm

  3. 20 mm, 15 mm

  4. 25 mm, 15 mm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The length of the vocal chords differs in men and women, which is why there is difference in the quality of their voice. The length of the vocal chord in men is approximately 20 mm and in women it is 15 mm.

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

How does sound is produced by humans?

  1. In humans sound is produced by the voice box.

  2. In humans sound is produced by the larynx.

  3. In humans sound is produced by the upper part of the wind pipe.

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

In humans sound is produced by the voice box or larynx. It is the upper part of the windpipe. Two vocal cords are stretched across the voice box leaving a narrow slit. When the lungs force air through the slit, it vibrates and produces sound.