(d) The least distance between two successive crests in the wave is equal to wavelength.

wavelength

The wave height is the vertical difference between a wave crest and a wave trough. The wave velocity (celerity) equals the wave length divided by the wave period. Sea reports give the significant wave height. This is calculated from the height of all the waves during a 20 minute period.

The distance between the first and sixth minima in the diffraction pattern of a single slit is 0.5 mm.

Straight Line

Hint: The separation between two consecutive crests in a transverse wave is called wavelength.

The linear distance between two successive crests is equal to one wavelength. The phase difference corresponding to two successive crests is equal to 2 pi radians (or) 360 degrees.

Hint – The distance between two consecutive crests or troughs or between a crest and neighboring trough is the wavelength of the wave and the number of times a crest or trough appears in the wave is called the time period of the wave.

Wave height is the vertical distance between the crest (peak) and the trough of a wave. Some other definitions: Still-Water Line is the level of the lake surface if it were perfectly calm and flat. Crest is the highest point on the wave above the still-water line.

Water waves are formed by vibrations in a liquid and sound waves are formed by vibrations in a gas (air). These mechanical waves travel through a medium by causing the molecules to bump into each other, like falling dominoes transferring energy from one to the next.