Tag: world of sounds

Questions Related to world of sounds

Percussion instruments are musical instruments that are played by

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

  1. banging

  2. shaking

  3. both A and B

  4. hitting

Show answer
Correct Option: C
Explanation:

Percussion instruments are musical instruments that are played by banging and shaking both.

so the answer is C.

If we strike a water-filled bowl with spoon, then why there is variation in the sound produced due to change in water level of the bowl?

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

  1. due to change in pitch

  2. due to change in amplitude

  3. both A and B

  4. None of the above

Show answer
Correct Option: A
Explanation:

Due to change in air column the wavelength and fundamental frequency changes. So the pitch of the sound changes which results in difference in the produced sounds .

so the answer is A.

Name the instruments for which more than one part is responsible for the production of sound.

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

  1. Tabla

  2. Violin

  3. Guitar

  4. All of the above

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Correct Option: A
Explanation:

In violin and guitar, only the string is responsible for sound production. Whereas in Tabla, the diaphragm, as well as the air in the Tabla, produce sound.

Sound waves in air cannot be polarised because they are 

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. progressive

  2. stationary

  3. transverse

  4. longitudinal

Show answer
Correct Option: D
Explanation:

It is a conceptual and memory based question.

A pure sine wave is called 

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. chord.

  2. melody

  3. tone

  4. overtone

Show answer
Correct Option: C
Explanation:

A pure sine wave with a certain frequency is called tone.
option "C" is correct.

Which factors determine the quality of the note ?

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. Wavelength.

  2. Frequency

  3. Time period.

  4. Wave form.

Show answer
Correct Option: D
Explanation:

Quality is used to describe the quality of the waveform as it appears to the listener. Therefore,  the quality of a note depends upon the waveform. 
Two notes of the same pitch and loudness, played from different instruments do not sound the same because the waveforms are different and therefore differ in quality or tone.

State whether given statement is True or False
Wave form is equivalent to quality 

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Quality is used to describe the quality of the waveform as it appears to the listener. Therefore,  the quality of a note depends upon the waveform. 
Two notes of the same pitch and loudness, played from different instruments do not sound the same because the waveforms are different and therefore differ in quality or tone.
Hence, quality of the sound is affected due to the change in its waveform.

Shock waves are produced by objects

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. carrying electric charges and vibrating

  2. vibrating with frequency greater than 20000Hz

  3. vibrating with very large amplitude

  4. moving with a speed greater than that of sound in the medium

Show answer
Correct Option: D
Explanation:

Shocks are caused by objects moving faster than the speed of sound in the medium.
(The shock tries to bring the velocity of the fluid in the medium to subsonic).

Sound waves are not transmitted to long distance because,

physics world of sounds time period, frequency and amplitude of sound amplitude, time period and frequency of a vibration nature and characteristics of sound waves

  1. they are absorbed by the atmosphere

  2. they have constant frequency

  3. the height of antenna required, should be very high

  4. velocity of sound waves is very less

Show answer
Correct Option: A
Explanation:

Sound waves are not transmitted to long distance because they are absorbed by the atmosphere. 

Fill in the blank.

When sound travels in a medium _______ travels in form of a wave.

physics world of sounds characteristics of sound wave time period, frequency and amplitude of sound sound waves are longitudinal waves

  1. the source

  2. the particles of the medium

  3. the disturbance

  4. the medium

Show answer
Correct Option: C
Explanation:

When sound travels in a medium the disturbance travels in form of a wave.
Sound is produced when something vibrates. That is, a disturbance is produced. The vibrating body or disturbance causes the medium (water, air, etc.) around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.