i) Time Period: The required by one point on a wave to complete one vibration is called Time Period.It is denoted by “T” and its S.I. unit is second (s).
ii) Frequency: The
number of waves produced by any source in unit time (1 second) is called
frequency. OR The number of waves passing through a point in unit time is
called frequency. It is denoted by “f” and its S.I. unit is Hertz(Hz).
iii) Wavelength: The
linear distance between two consecutive crests or troughs is called wave length
of that wave. OR The linear distance between two consecutive compressions or
rarefactions is called wavelength of that wave .It is denoted by “
iv) Wave Speed: The speed by which a wave travels is called
wave speed. Its is denoted by “v” and its S.I unit is meter per second (m/s).
v) Wave Front: The
Wave front is an imaginary line on a wave that joins all points that are in the
same phase. A wavefront is usually drawn by joining all wave crests.
There are two types of the wavefront, depending on how the waves are produced, which are concentric circles and plane straight lines.In a ripple tank, a dipper can produce circular waves. These waves have a circular wavefront. In a ripple tank, a plane dipper can produce plane waves. These waves have a plane wavefront.
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