NCERT what are characteristic of sound wave
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Characteristics of sound wave
A sound wave is described by its five characteristics named amplitude, wavelength, frequency, time-period, and pitch.
I. Amplitude (A)
Amplitude of a wave is the maximum displacement of medium particles in either direction from their equilibrium (rest) position.
Loudness and Intensity
In common context, we interchange the term loudness with the term intensity. These two terms are quite different from each other.
Loudness is the measure of response of a sound by a human ear whereas intensity is the amount of energy passed per unit area per unit time.
II. Wavelength
The distance between two consecutive compressions or rarefaction of a sound wave is called its wavelength. Equivalently, it is defined as the distance between two consecutive crests or troughs of a transverse wave.
III. Frequency can be defined as number of cycles per unit time. The unit of frequency is Hertz (Hz). 1Hz means that an event repeats once per second.
IV. Time period an event is the duration of time it takes to complete the event. For example, the time period of a pendulum is the time taken by the pendulum to complete one oscillation. Time period is the reciprocal of frequency.
V. Pitch is the characteristic of sound which help us to distinguish sounds of same loudness but of different frequency . It depends on frequency. Greater the frequency, the greater will be the pitch. Pitch helps us to distinguish between voice of woman and man.
Hope it helps
Characteristics of sound wave
A sound wave is described by its five characteristics named amplitude, wavelength, frequency, time-period, and pitch.
I. Amplitude (A)
Amplitude of a wave is the maximum displacement of medium particles in either direction from their equilibrium (rest) position.
Loudness and Intensity
In common context, we interchange the term loudness with the term intensity. These two terms are quite different from each other.
Loudness is the measure of response of a sound by a human ear whereas intensity is the amount of energy passed per unit area per unit time.
II. Wavelength
The distance between two consecutive compressions or rarefaction of a sound wave is called its wavelength. Equivalently, it is defined as the distance between two consecutive crests or troughs of a transverse wave.
III. Frequency can be defined as number of cycles per unit time. The unit of frequency is Hertz (Hz). 1Hz means that an event repeats once per second.
IV. Time period an event is the duration of time it takes to complete the event. For example, the time period of a pendulum is the time taken by the pendulum to complete one oscillation. Time period is the reciprocal of frequency.
V. Pitch is the characteristic of sound which help us to distinguish sounds of same loudness but of different frequency . It depends on frequency. Greater the frequency, the greater will be the pitch. Pitch helps us to distinguish between voice of woman and man.
Hope it helps
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