Tag: study of sound

Questions Related to study of sound

The audible range of frequency is

audible, infra and ultra sound with its application study of sound physics

  1. 20 Hz to 20,000 Hz

  2. 40 Hz to 40,000 Hz

  3. 60 Hz to 60,000 Hz

  4. 10 Hz to 20,000 Hz

Show answer
Correct Option: A
Explanation:

Human ear can hear sound having frequency range from $20 \ Hz$ to $20 \ kHz$.

So, human beings can't hear sound having frequency below $20  \ Hz$ and above $20,000 \ Hz$.

Out of the following, which frequency is not clearly audible to the human ear?

audible, infra and ultra sound with its application study of sound physics

  1. 30 Hz

  2. 30,000 Hz

  3. 300 Hz

  4. 3000 Hz

Show answer
Correct Option: B
Explanation:

Human ear can hear sound having frequency range from  $20 \ Hz$ to $20$ $kHz$.

Thus $30,000$ $Hz$ is not audible to the human ear.

Which of the following frequencies of sound can't be heard by human beings?

audible, infra and ultra sound with its application study of sound physics

  1. $40\;Hz$

  2. $400\;Hz$

  3. $4000\;Hz$

  4. $40,000\;Hz$

Show answer
Correct Option: D
Explanation:

The audible range of frequency is $20\;Hz$ to $20,000\;Hz$

Out of the following, which frequency is not clearly audible to the human ear ?

audible, infra and ultra sound with its application study of sound physics

  1. $30\;Hz$

  2. $30,000\;Hz$

  3. $300\;Hz$

  4. $3000\;Hz$

Show answer
Correct Option: B
Explanation:

The frequency range of human hearing is about 20 Hz to 20 KHz. This range of frequency is known as audible range. Human cannot hear the sound with frequency above or below this audible range. Hence the sound with frequency 30,000 Hz cannot audible to human ear

The direction of motion of a particle at any instant is given by

audible, infra and ultra sound with its application study of sound physics

  1. Velocity

  2. Loudness

  3. Frequency

  4. Phase

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Correct Option: D

Which of the following frequencies of sound cannot be heard by human beings?

audible, infra and ultra sound with its application study of sound physics

  1. $5\;Hz$

  2. $20\;Hz$

  3. $400\;Hz$

  4. $1000\;Hz$

Show answer
Correct Option: A
Explanation:

The audible range of frequency is $20\;Hz$ to $20,000\;Hz$

The audible range of frequency is :

audible, infra and ultra sound with its application study of sound physics

  1. $20\;Hz$ to $20,000\;Hz$

  2. $40\;Hz$ to $40,000\;Hz$

  3. $60\;Hz$ to $60,000\;Hz$

  4. $10\;Hz$ to $20,000\;Hz$

Show answer
Correct Option: A
Explanation:

The audible range of frequency is $20\;Hz$ to $20,000\;Hz$

Whisper has an intensity of -

audible, infra and ultra sound with its application study of sound physics

  1. 70 dB

  2. 80 dB

  3. 30 dB

  4. 120 dB

Show answer
Correct Option: C
Explanation:

The sound intensity of a human whisper has an intensity of approximately $30\,dB$.

The range of ________ vibrations is above 20,000 Hz

audible, infra and ultra sound with its application study of sound physics

  1. ultrasonic

  2. Infrasonic

  3. Both 

  4. None

Show answer
Correct Option: A
Explanation:

The range of ultrasonic vibrations is above 20,000 Hz. These are high frequency sound waves beyond the range of human hearing.

Which of the following frequency of sound can't be heard by human beings?

audible, infra and ultra sound with its application study of sound physics

  1. 40 Hz

  2. 400 Hz

  3. 4000 Hz

  4. 40,000 Hz

Show answer
Correct Option: D
Explanation:

Human ear can hear sound having frequency range from $20 \ Hz$ to $20 \ kHz$.

Thus sound of frequency $40,000 \ Hz$ can't be heard by human beings.