Question

What is the distance between a crest and a trough in a wave?

• A. $\lambda$
• B. $\frac{\lambda }{2}$
• C. $\frac{\lambda }{4}$
• D. 2$\lambda$

Answer 1

The correct option is A $\lambda$

The highest surface part of a wave is called crest, and the lowest part is the trough. The horizontal distance between two adjascent crests or troughs is known as the wavelength $\left(\lambda \right)$.