Tag: production and propagation of sound

Questions Related to production and propagation of sound

The physical quantity which oscillates in most waves is:

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

  1. Mass

  2. Energy

  3. Amplitude

  4. Wavelength

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Correct Option: C
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.

How many vocal cords does a person have?

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

  1. 3

  2. 1

  3. 2

  4. 5

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Correct Option: C
Explanation:

There are 2 vocal cords, which produce sound in humans. There are, in fact, 2 other cords but they do not contribute in producing voice. Those are silent vocal cords.

What is the average adult female speaking voice range?

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

  1. 125Hz

  2. 210Hz

  3. 300Hz

  4. 400Hz

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Correct Option: B
Explanation:

Average female speaking voice range is $210Hz$

Average male speaking voice range is $125Hz$

Average child speaking voice range is $ 300Hz$

Sound in human body is produced by

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

  1. vocal cord

  2. Neck

  3. Heart

  4. Larynx

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Correct Option: A

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

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

  1. Ultrasonic sounds

  2. Infrasonic sounds

  3. Extraordinary sounds

  4. Both (a) and (c)

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Correct Option: D
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.

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

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

  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

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Correct Option: A
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).

The back and forth motion of an object is called

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

  1. vibration

  2. rotation

  3. translation

  4. linear motion

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Correct Option: A
Explanation:

When a body moves constantly from one position to the other and back to the initial position, then this motion of the body is called vibration.

Sound is produced by vibration. Define vibration.

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

  1. Vibration is a rapid to and fro motion of the object.

  2. Vibration is a circular motion of the object.

  3. Vibration is a translational motion of the object.

  4. None of the above

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Correct Option: A
Explanation:

Vibration is a rapid to and fro motion of the object. 

Which of the following will produce sound through vibration.

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

  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

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Correct Option: D
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.

Sound waves are mechanical waves.

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

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

yes, sound waves are mechanical waves.

so the answer is A.