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 

 

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Wavelength- It is the distance between a compression and an adjacent rarefraction.so Wavelength is 50cm.

Frequency = Frequency of a wave is the no. of waves produced in 1 second.

So frequency = 20/0.2

= 100

Time period = The time required to produce one complete wave is called time-period od the wave.

Frequency = 1/time period

100 = 1/time period

100 time period = 1

Time period = 1/100

=0.01 sec

 

Posted by ankit yadav

(student) good luck 4r exam

 

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