Advertisements
Advertisements
Question
Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their :
(i) intensities and
(ii) frequencies
Advertisements
Solution
(i) Same pitch
`(A_1)/(A_1) = 1 /3`
Intensities I ∝ A2
`therefore I_1/I_2 = 1/9`
(ii) Pitch is same ⇒ frequency is same.
APPEARS IN
RELATED QUESTIONS
Shrillness of a sound is determined by the ______ of vibration.
The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?
The quality of a sound depends on the amplitude of wave.
Which of the following determines the loudness of a sound 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.
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.
Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest pitch?
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
