A sine wave has a frequency of 50 HZ. Its angular frequency is............radian/second.

A sine wave has a frequency of 50 HZ. Its angular frequency is............radian/second.

A. 100π 

B. 50π  

c. 25π  

D. 5π   

Ans:   A

Explanatory answer :

The relationship between frequency and angular velocity is

                                    w=2πF  rad/sec

where  w= angular velocity in rad/sec

            F= frequency in HZ

Therefore       w=2π*50

               

                      w=100π  rad/sec