Question

Differentiate between:
1. High- pitched sound and low pitched sound
2. time period and frequency
3. Loudness and pitch

Answer 1

1. High- pitched sound and low- pitched sound
⇒Sound of high frequency is called high pitched sound while sound of low frequency is called low pitched sound.

2. Time period and frequency
⇒Time taken to complete one oscillation or vibration is called time period while the number of oscillations or vibrations complete in one second is called frequency.

3. Loudness and pitch
⇒The energy carried by a sound is called its loudness and it depend on amplitude of the sound wave while shrillness and flatness of sound is called its pitch and it depends on the frequency of the sound wave.

Answer 2

1. High- pitched sound and low pitched sound
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High- pitched sound
1)the no of waves per second is more
2)they are the sound of high frequency

 low pitched sound
1)the no of waves per second is less
2)they are the sound of low frequency
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2. time period and frequency

 time period
1)the time required to complete one full cycle by the sound wave
2)it is the reciprocal of frequency 

frequency
1)it is defined as no of cycles per second
2)it is reciprocal of time period
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3. Loudness and pitch

loudness
1)it depends on amplitude
2)SI unit is decibels

pitch
1)it depends on frequency
2)SI unit is hertz