Advertisements
Advertisements
Question
State three factors on which loudness of sound heard by a listener depends.
Advertisements
Solution
THREE FACTOR FOR LOUDNESS OF SOUND:
- Surface area of the sounding body. i.e. is directly proportional to the surface area of vibrating body.
- On the distance of the source of sound, i.e. decreases with distance.
- On amplitude of wave i.e. increases with amplitude.
APPEARS IN
RELATED QUESTIONS
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 x 108 ms-1
What is an echo
The safe limit of loudness of audible sound is
Why is the loudness of sound heard by a plucked wire increased when mounted on a sound board?
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
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.
Two musical notes of the same pitch and loudness are played on a violin and a piano. Their waveforms are as shown in the figure below:

Give a scientific reason.
The sounds generated by a tabla and a sitar are different.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
