ICSE Class 10 Physics 2016 Solved Paper

The ratio of amplitude of two waves is 3:4. What is the ratio of their :

Question : 14

Total: 73

loudness?

Solution:

Loudness of sound is directly proportional to the square of amplitude i.e.,
‌ Loudness ‌∝a2
‌ Ratio of Loudness ‌‌=‌

a1‌2

a2‌2

=‌

(3)2

(4)2

‌=‌

=9:16

Go to Question:

Prev Question

Next Question