Question

The speeds of two sounds are in the ratio 2 : 3 and their wavelength are in the ratio 3 : 2 respectively. Their frequencies are in the ratio

Answer 1

Answer:

Loudness of sound is directly proportional to the square of amplitude i.e.,

Loudness (L)∝a

2

Ratio of Loudness =

L

2

L

1

=

a

2

2

a

1

2

=

(4)

2

(3)

2

=

16

9

=9:16

(ii) Change in amplitude of a sound does not affect its frequency.

∴ Ratio of frequencies remains same =1:1