Question

Figure below shows the distance-displacement graph of two waves A and B. Compare

1. the amplitude,
2. the wavelength of the two waves.

Answer 1

Amplitude is the maximum displacement from the mean position.

For A maximum displacement = 10 cm and

for B the maximum displacement = 5 cm.

(i) The ratio of maximum amplitude is `"A"_1/"A"_2 = 10/5 = 2 : 1`

Wavelength of A = 8 cm

Wavelength of B = 16 cm

(ii) The ratio of wavelength is `lambda_1/lambda_2 = 8/16 = 1 : 2`