Question

please answer this question​

Answer 1

Answer:

i) 1:3

ii) 1:9

HOPE IT HELPS : )

Answer 2

i. Loudness depends on the square of the amplitude of the wave.

That is, loudness∝(amplitude)^2

Thus, when the ratio of amplitudes of the wave is 1:3, the loudness becomes 1:9.

ii. There are two main properties of a regular vibration - the amplitude and the frequency - which affect the way it sounds. Amplitude is the size of the vibration, and this determines how loud the sound is. Larger vibrations make a louder sound. Frequency is the speed of the vibration, and this determines the pitch of the sound. It is only useful or meaningful for musical sounds, where there is a strongly regular waveform.

Hence, if the pitch is the same for two waves then the frequency also remains the same. Therefore, the ratio of the frequencies is 1:1.