Physics
Figure below shows the distance-displacement graph of two waves A and B. Compare (i) the amplitude, (ii) the wavelength of the two waves.
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Answer
(i) Amplitude = maximum displacement from the mean position.
From graph,
For A, Amplitude = 10 cm and
For B, Amplitude = 5 cm
Ratio between the two amplitudes —
= = 2 : 1
Therefore, the ratio of the two amplitudes = 2 : 1
(ii) For A, Wavelength λ1 = 8 cm
For B, Wavelength λ2 = 16 cm
Ratio between the two Wavelengths —
= = 1 : 2
Therefore, the ratio of the two wavelengths = 1 : 2
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