Question

4. Answer in brief. (2x2=4)

a) How many factors affect the loudness of a sound? Name them. Class-7​

Answer 1

Answer:

Amplitude of sound waves

(ii) Sensitivity of ear

(iii) Distance from the source of the sound and the listener.

Answer 2

Answer:

he factors affecting the loudness of sound :-

1)loudness is proportional to the square of the amplitude .

2) loudness varies inversely as the square of the distance

3)loudness this depends on the surface area of the vibrating body .

4)loudness depends on the density of the medium ; more the density of the media more is the loudness .

5)loudness depends on the presence of resonant bodies . The presence of resident bodies near the vibrating body increases the loudness of sound