Question

If amplitude of sound is 4 times then the loudness increase by a factor of
A 4 times
B 8 times
C 12 times
D 16 times
Please answer this I will mark brainlist​

Answer 1

Answer:

the answer is a or b but I am sure it is not c or d

Answer 2

(Option d) Loudness is the degree to which sound can be perceived by us. The range of sound is quite to loud.

The loudness of a sound is directly proportional to the square of the amplitude.

Loudness ∝ (amplitude)²

Let amplitude of sound be x.

Here the amplitude is 4 times x = 4x

Loudness ∝ (4x)²

Loudness ∝ 16x²

Hence if the amplitude is four times increased then loudness increases by 16 times.