Tag: sound

Questions Related to sound

The pitch of sound increases if its frequency

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

  1. increases

  2. decreases

  3. remains same

  4. cant say

Show answer
Correct Option: A
Explanation:

The pitch of sound increases if its frequency increases. 
Pitch describes how high or low a tone is and depends upon the rapidity with which a sounding body vibrates, i.e., upon the frequency of vibration. The higher the frequency of vibration, the higher the pitch.

Sound wave P has a greater amplitude and a larger wavelength in air than sound wave Q. How do the loudness and pitch of P compare with the loudness and pitch of Q?
How do the loudness and pitch of P compare with the loudness and pitch of Q?

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

  1. P is louder and higher in pitch than Q

  2. P is louder and lower in pitch than Q

  3. P is quieter and higher in pitch than Q

  4. P is quieter and lower in pitch than Q

Show answer
Correct Option: B
Explanation:
We know that pitch $\propto$ frequency.
wavelength of P $>$  wavelength of Q
$\implies$ frequency of P $<$ frequency of Q
$\implies $ pitch of P $<$  pitch of Q
now ,
loudness $\propto $ amplitude
So, P has more loudness as compared to Q.

Which figure indicates low pitch?

physics sound 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:

In figure B , wavelength (distance between two successive compressions or rarefactions ) is large therefore frequency will be smaller i.e. pitch is low .

The sound produced by an object vibrating with a high frequency is called _____________ .

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

  1. shrill or high-pitched sound

  2. deep or low-pitched sound

  3. heavy sound

  4. musical sound

Show answer
Correct Option: A
Explanation:

The frequency determines the shrillness or pitch of a sound. If the frequency of vibration is higher, we say that the sound is shrill and has a higher pitch. If the frequency of vibration is lower, then we say that the sound has low pitch.

With the increase in frequency of a vibrating body the sound becomes shrill. True or false.

physics sound 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: A
Explanation:

As the frequency of vibration of an object increases, the pitch or shrillness of sound produced by it also increases.

The characteristic of sound which distinguishes between a sharp sound and a dull sound is called loudness. True or false.

physics sound 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:

The characteristic of sound which distinguishes between a sharp sound and dull sound is called pitch

The shrillness of a sound depends upon frequency.

physics sound 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: A
Explanation:

 Pitch is the characteristic of a wave by which sound wave appears shrill or grave. It depends upon the frequency of the wave. 

so the answer  is A.

A shrill sound has a _______ pitch and a dull sound has a _______ pitch.

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

  1. High, low

  2. Low, high

  3. Low, low

  4. High, high

Show answer
Correct Option: A
Explanation:

a shrill sound has a high pitch and a dull sound has a low pitch .

so the answer is A.

State whether true or false :

Shrill sound is a high-pitch sound and a soft sound is a low-pitch sound.

physics sound 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: A
Explanation:

The vocal cords of women are thicker than men , therefore they produce a shrill sound , which we know has higher frequency or higher pitch , whereas men's voice is grave , means low frequency i.e. lower pitch .

The frequency of a man's voice is $300\space Hz$. If the velocity of sound waves is $336\space ms^{-1}$, the wavelength of the sound is

physics sound sound as a wave of disturbance vibrations in a tuning fork vibrations in tuning fork

  1. $1.12\space m$

  2. $300\times336\space m$

  3. $330/336\space m$

  4. None of these

Show answer
Correct Option: A
Explanation:

We are given, frequency $f=300 Hz$, and velocity $v=336 ms^{-1}$,

From the relation $v=f \times \lambda$,

$\lambda = v/f =336/300=1.12 m$

Option "A" is correct.