JAMB - Physics (2025 - No. 83)
The distance between two successive trough points of a wave is
two wavelength
a wavelength
one third wavelength
half wavelength
Explication
The distance between two successive troughs of a wave is equal to one wavelength (λ)
One wavelength (λ) is defined as the distance between two successive points in the same phase (crest to crest or trough to trough).