1.

The equation of a plane progressive wave is given by \[y=0.025\sin (100t+0.25x)\]. The frequency of this wave would be              [CPMT 1993; JIPMER 2001, 02]

A.            \[\frac{50}{\pi }Hz\]          
B.            \[\frac{100}{\pi }Hz\]
C.            100 Hz                                     
D.            50 Hz
Answer» B.            \[\frac{100}{\pi }Hz\]


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