The time between two successive crests is called what?

The time between two successive crests is called what?

• A. Period
• B. Wavelength
• C. Velocity
• D. Amplitude

Answer: (A)

The time between two successive crests defines the period of a wave. It is the duration of one complete cycle at a fixed point, measured in seconds. If a crest arrives every two seconds, that interval is the period. The period is the reciprocal of frequency, so T = 1/f, meaning higher frequency waves have shorter periods. The speed of the wave is related to both period and wavelength by v = λ / T (or v = fλ), linking how fast the wave moves with how long each cycle lasts and how far each crest travels between cycles. Wavelength is a spatial distance between crests, not a time interval, velocity is the rate of wave travel, and amplitude is the height of the wave—properties describing different aspects of the wave.

The time between two successive crests defines the period of a wave. It is the duration of one complete cycle at a fixed point, measured in seconds. If a crest arrives every two seconds, that interval is the period. The period is the reciprocal of frequency, so T = 1/f, meaning higher frequency waves have shorter periods. The speed of the wave is related to both period and wavelength by v = λ / T (or v = fλ), linking how fast the wave moves with how long each cycle lasts and how far each crest travels between cycles. Wavelength is a spatial distance between crests, not a time interval, velocity is the rate of wave travel, and amplitude is the height of the wave—properties describing different aspects of the wave.