The crest of a wave is the point where the disturbance is at:

Correct option is C

The correct answer is (C) maximum point

Explanation:

• The crest of a wave is the point where the disturbance is at its maximum point.

• In a transverse wave, the crest is the highest point above the equilibrium (rest) position.

• It represents the maximum amplitude of the wave, where the displacement of particles is at its greatest from the equilibrium position.

Information Booster:

• The trough is the opposite of the crest and represents the minimum displacement (lowest point) of the wave.

• Waves are characterized by their amplitude (maximum displacement from equilibrium), wavelength (distance between two consecutive crests or troughs), and frequency (how often a wave passes a point in a given time).

Additional Information:

• Option A (constant point) is incorrect because the crest represents the maximum displacement, not a constant point.

• Option B (zero point) is incorrect as the zero point refers to the equilibrium position, not the crest.

• Option D (minimum point) refers to the trough of the wave, not the crest.