Advertisements
Advertisements
प्रश्न
What does the intensity of sound depend upon?
Advertisements
उत्तर
The intensity of sound is directly proportional to the square of the amplitude of vibration. If the amplitude is increased, the sound becomes more intense (louder).
Mathematically: I ∝ A2 (where I is intensity and A is amplitude).
In addition to amplitude, other factors that affect the perceived loudness of sound include:
- Distance from the Source: The intensity of sound decreases as you move further away from the source of the sound.
- Surface Area: A larger vibrating surface area generally produces a sound with greater intensity.
संबंधित प्रश्न
The lower the frequency of vibration, the higher is the pitch.
An enemy plane is at a distance of 300 km from a radar. In how much time the radar will be able to detect the plane? Take velocity of radio waves as 3 × 108 ms−1.
State two conditions for an echo to take place.
The pitch of sound depends on frequency.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
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.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
The diagram below shows three ways in which the string of an instrument can vibrate.
(i) Which of the above diagrams shows the fundamental note?
(ii) Which has the frequency 4 times that of the fundamental?
(iii) State the ratio between the frequency of the first and second.
