Characteristics of Sound

Question 1

Name the three characteristics of sound using which two sounds can be distinguished

Answer 1

1. loudness
2. pitch
3. quality

Question 2

How to obtain the wave pattern of a sound wave?

Answer 2

Using a microphone and a cathode ray oscilloscope (C.R.O)

Question 3

Define loudness

Answer 3

Loudness is the characteristic by virtue of which a loud sound can be distinguished from a faint one, both having the same pitch and quality

Question 4

What does loudness of sound depend on?

Answer 4

On the amplitude of the wave

Question 5

Define intensity of a sound wave

Answer 5

The intensity of a sound wave at an point of the medium is the amount of sound energy passing per second normally through a unit area at that point.

Question 6

Give the factors affecting the loudness of sound

Answer 6

1. Loudness is proportional to the square of amplitude
2. Loudness varies inversely as the square of distance from the source
3. Loudness depends on the surface area of the vibrating body
4. Loudness depends on the density of the medium
5. Loudness depends on the presence of resonant bodies