Two waves of lengths 50 cm and 51 cm produced 12 beats per second. The – McqOptions

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1.	Two waves of lengths 50 cm and 51 cm produced 12 beats per second. The velocity of sound is [CBSE PMT 1999; Pb. PET 2001; AFMC 2003]
A.	306 m/s
B.	331 m/s
C.	340 m/s
D.	360 m/s
Answer» B. 331 m/s

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