Question

Differentiate between amplitude, pitch and wavelength of sound wave?

Answer 1

Answer:

Sound:-Sound is a form of energy which gives us sensation of hearing.

Vibration causes sound.

•Wave:-Any disturbance in a medium is called wave.

Now differentiate between Amplitude;Pitch and Wavelength of sound wave

I) In Amplitude

•The maximum displacement from it's mean position of a vibrating body is called Amplitude

•S.I unit= metre (m)

•The loudness or softness of sound is basically determined by it's amplitude

•It depends upon the force with which an object is vibrate

ii) In Pitch

•The shrillness of sound is called pitch

•The faster the vibration of the object;the higher is the pitch and the higher is the frequency

•Pitch depends upon frequency i.e;High frequency=high pitch,low frequency=low pitch

iii) In Wavelength

•The distance between two successive particles in a medium which are in same plane (Compression or rarefraction) is called Wavelength

•S.I unit=metre (m)

•It is usually represented by Greek letter Lambda.

Answer 2

Answer:

Sound wave is a type of Longitudinal Wave carrying energy due to vibration of medium molecules in the direction of propagation of wave.

Amplitude:

1. It is the maximum displacement of medium particles from the mean position.

2. It is measured in units of distance , e.g. Metres, cm, mm , etc.

3. Denoted be "A".

Pitch:

1. It is an index of frequency of the sound wave. Higher the pitch denotes higher frequency.

2. Frequency is measured in per second. It's SI unit is Hz.

3. Denoted by "μ".

Wavelength:

1. It is the distance between adjacent troughs or adjacent crests( in case of transverse waves) . In case of longitudinal waves(like sound wave) , it is defined as the distance between adjacent compressions or adjacent rarefactions.

2. It is measured in distance units like metres, cm, mm, etc.

3. Denoted by "λ".