Answer :
WAVELENGTH OF WAVE IS DISTANCE MOVED DURING ONE OSCILLATION.
Distance between crest and next trough is half of the wavelength. Therefore wavelength is λ = 2 × 10 cm= 20 cm .
FREQUENCY = ν = NUMBER OF RIPPLES PER SEC = 12/SEC = 12 HZ .
Velocity of wave = ν ×λ = 12/sec × 0·2m = 2·4 m/sec
=
Distance between crest and next trough is half of the wavelength. Therefore wavelength is λ = 2 × 10 cm= 20 cm .
FREQUENCY = ν = NUMBER OF RIPPLES PER SEC = 12/SEC = 12 HZ .
Velocity of wave = ν ×λ = 12/sec × 0·2m = 2·4 m/sec
=
Frequency = Number of ripples produced per second
That is,
Frequency, f = 10 Hz
The frequency of the wave is 10 Hz.
Wavelength, l = 2 × 12 cm = 24 cm = 0.24 m
The wavelength of the wave is 0.24 m.
Velocity of the wave = Frequency × wavelength
v = f × λ
= 10 × 0.24
= 2.4 m/s
The velocity of the wave is 2.4 m/s.