1.

Two waves \[y=0.25\sin 316\,t\] and \[y=0.25\sin 310\,t\] are travelling in same direction. The number of beats produced per second will be [CPMT 1993; JIPMER 2000]

A.   6    
B.   3
C.   3/p
D.   3p
Answer» D.   3p


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