In the curve (Fig.12.1) half the wavelength is
As one wavelength = one crest + one trough,
half the wavelength = one crest or
one trough = AC (or CE).
Further, AC = AB + BC = BC + CD = BD (as AB = CD)
7
In the curve (Fig.12.1) half the wavelength is
As one wavelength = one crest + one trough,
half the wavelength = one crest or
one trough = AC (or CE).
Further, AC = AB + BC = BC + CD = BD (as AB = CD)