Amplitude of sound

Q.

Define amplitude, frequency and time period of vibration.

Q.

When the amplitude of vibration is large, the sound produced is

1. Loud

2. Feeble

3. High pitched

4. Low pitched

Q.

Loudness of a sound is proportional to the square of the amplitude of the vibration producing the sound. Explain

Q.

The amplitude of a sound wave determines its ___.

1. loudness

2. wavelength

3. frequency

4. pitch

Q. Which of the following characteristics of sound depends on the amplitude of vibrations?

1. speed
   
2. pitch
3. loudness
4. quality
   

Q. Fill in the blanks with the most appropriate option.
If a guitar string is pulled strongly, its amplitude of vibration ___(i)___ and the note heard is ___(ii)___, If it is pulled lightly, its amplitude of vibration ___(iii)___ and the note heard is ___(iv)___.

1. (i)-decreases, (ii)-softer, (iii)-increases, (iv)-louder
2. (i)-increases, (ii)-louder, (iii)-decreases, (iv)-softer
3. (i)-increases, (ii)-softer, (iii)-decreases, (iv)-louder
4. (i)-decreases, (ii)-louder, (iii)-increases, (iv)-softer

Q.

why waves transfer energy but not matter

Q. If the intensity of sound becomes 4 times, then the amplitude becomes

Q.

Out of two, which one would make a higher pitch and why?

1) A post card , rubbed slowly against a comb?

2) A sandpaper , rubbed rapidly against a comb?

Q. If the amplitude of a sound is tripled, what will be the effect on its loudness?

Q. There are two bottles of glass, one bottle is two third filled with water and another bottle is filled one third with water. When we blow across the mouth of each bottle, then
(i) The bottle with the less air in it gives the note of higher pitch.
(ii) The shorter the air column, the higher the pitch of the note produced.

1. Both (i) and (ii) are correct and (ii) is the correct explanation of (i).
2. Only (i) is correct.
3. Both (i) and (ii) are correct but (ii) is not the correct explanation of (i).
4. Only (ii) is correct.

Q. When we change feeble sound to loud sound, we increase its ______.

1. velocity
2. amplitude
3. frequency
4. wavelength

Q. Particles execute __________ during wave propogation.

1. translatory motion
2. oscillatory motion
3. rectilinear motion
4. circular motion

Q. Match the following characteristics of a sound wave.

1. Loudness
2. Pitch
3. Inverse of frequency

Q. If the amplitude of the vibration is large, the sound is feeble.

1. True
2. False

Q. The maximum displacement of the vibrating body from its mean position is called ___________.

1. 
   frequency
2. 
   pitch
3. 
   amplitude
4. 
   vibration

Q. Frequency of a wave depends on its amplitude.

1. True
2. False

Q.

which characteristics of a sound wave determine its loudness . how is the loudness related to this characteristics of the wave

Q.

The amplitude of a sound wave determines its ___.

1. pitch

2. loudness

3. wavelength

4. frequency

Q.

The ____ of a sound wave is expressed in hertz (Hz).

1. frequency

2. amplitude

3. wavelength
4. time period

Q. The maximum displacement of the vibrating body from its mean position is called ___________.

1. 
   frequency
2. 
   pitch
3. 
   amplitude
4. 
   vibration

Q.

Following is a diagram based question

which of these sounds will be louder (a) or (b)

Q. A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case:

1. sound will be louder but the pitch will be the same.
   
2. sound will be louder and the pitch will also be higher.
   
3. sound will be louder but pitch will be lower.
   
4. both loudness and pitch will remain unaffected.