Q. Waves of frequency 200 hz are produced in a string as shown in figure.
Find amplitude, wavelength and velocity of wave.

Frequency = 200 Hz
wavelength = 35 cm ( as shown in the figure)
                   = 0.35 m
amplitude = 12 cm = 0.12 m ( as shown in figure)

velocity = frequency * wavelength
              = 200 * 0.35 m/s
              = 70 m/s