Advertisements
Advertisements
प्रश्न
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- pitch?
Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their
- loudness, and
- frequencies ?
उत्तर
- Loudness ∝ (amplitude)2
Loudness is proportional to amplitude square Ratio of loudness = `"L"_1/"L"_2 =((a_1)^2)/((a_2)^2)`
= `(1)^2/(3)^2 = 1\/9`
= 1: 9 - Frequency of the sound wave has no effect on amplitude.
so, frequency remains the same if the pitch is unchanged.
∴ `"Pitch of first wave"/"Pitch of second wave"`=`1/1`
= 1 :1
APPEARS IN
संबंधित प्रश्न
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Name the factor that determines Quality of the note
The ratio of amplitude of two waves is 3:4. What is the ratio of their loudness?
Name one property of waves that do not change when the wave passes from one medium to another.
Smaller the membrane, .................. is the pitch.
Explain the mechanism of the formation of a longitudinal wave when the source vibrates in the air.
Name three characteristics of a musical sound.
How is loudness related to the amplitude of wave?
Two identical guitars are played by two persons to give notes of the same loudness and pitch. Will they differ in quality? Give reason for your answer.
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board?
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
How does the two sounds of same loudness and same pitch produced by different instruments differ? Draw diagrams to illustrate your answer.
Two identical guitars are played by two persons to give notes of the same pitch. Will they differ in quality? Give a reason for your answer.
A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.
Give scientific reason for the following:
When a nail is hammering appears to get higher and higher in pitch.
What is the noise? Give an example.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
