1.

An open tube is in resonance with string (frequency of vibration of tube is n0). If tube is dipped in water so that 75% of length of tube is inside water, then the ratio of the frequency of tube to string now will be    [J & K CET 2005]

A.            1    
B.            2
C.            \[\frac{2}{3}\]                      
D.            \[\frac{3}{2}\]
Answer» C.            \[\frac{2}{3}\]                      


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