A source of wave produces 50 crests and 50 trough in 0.1 s. The distance between a crest and next trough is 20 cm. Find out

- wavelength
- frequency and
- time period of the wave.

A source of wave produces 50 crests and 50 trough in 0.1 s. The distance between a crest and next trough is 20 cm. Find out

- wavelength
- frequency and
- time period of the wave.

- Since, we know that the distance between a crest and next trough is where λ is wavelength of the wave. Therefore, = 20 cm.

∴ λ = 40 cm - The pluse produces by the source is 0.1 s.

∵ Frequency of a wave = - ∵ Time period of a wave, T =

= 2 x 10^{–3}s