a source of sound produces 20 compressions and 20 rarefractions in 0.2 seconds.the distance between a compression and rarefaction is 50cm . find the wavelength,frequency and time period of the wave.
please do answer it fast cuz tommorow is my finals.
As Wavelength is the distance between tow consecutive compression or rarefraction.
Wavelength = 50 x 2 = 100 cm
Frequency of a wave is the number of waves produced in 1 second.
So, frequency = 20/0.2
f = 100 Hz
Frequency = 1/time period
T= 1/f
T = 1/100 = 0.01 sec