Question

what is trough and crest of a wave??????

Answer 1

Waves have moving crests (or peaks) and troughs. A crest is the highest point the medium rises to and a troughis the lowest point the medium sinks to. Crests and troughs on a transversewave are shown in Figure 8.2. ... A point on the wave is a trough if the displacement of the medium at that point is at a minimum.

Answer 2

$\Large{\underline{\underline{\bf{Solution :}}}}$

★ Crest :

The highest point on the hump in a transverse wave is called a crest. Thus, the point of maximum positive displacement on a transverse wave is called a crest.

$\rule{150}{2}$

★ Trough :

The lowest point on the depression in a transverse wave is called a trough. Thus, the point of maximum negative displacement on a transverse wave is called a trough.