Question

In fig. shows a snap shot of a wave from of frequency 50 Hz in a string. The numbers in the diagram represents distance in centimeters. Fpr the wave motion, find
(a) Wavelength,
(b) Amplitude,
(c) Velocity.

Answer 1

(a) Wavelength = Distance between two successive crests or two successive troughs=10 cm

(b) Amplitude = Maximum displacement of the particles from the mean position = 4 cm

(c)
Velocity= frequency × wave length 

Given, frequency = 50 Hz,

wavelength= 10 cm= 0.1 m

.·. Velocity= 50 x 0.1=5 m/s