Question

Define wavelength, frequency and time period.

Answer 1

Wavelength- The distance travelled by a wave in one complete oscillation is called as wavelength. The SI unit of wavelength is meter (m) and it is denoted by a Greek letter lambda $\left(\lambda \right)$.
Frequency- The number of oscillations completed in one second is called as frequency of a wave. SI unit to measure frequency of a wave is hertz (Hz).
Time period- The time taken by a wave to complete one oscillation is called as time period. SI unit to measure time period is second (s).