H2P-279
Intensity and amplitude
H2 Physics · JC 1 · Easy · Intensity and amplitude
Two sound waves of the same frequency travel through air. The amplitude of wave X is three times the amplitude of wave Y. What is the ratio of the intensities ?
(Take intensity to be proportional to the square of amplitude.)
(Take intensity to be proportional to the square of amplitude.)
- 9 : 1
- 3 : 1
- 1 : 9
- 1 : 3
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