A metal rod of length 5 m is clamped by two rigid support separation between which is 2 m as shown in figure. Longitudinal standing wave are set up in the rod using a device having frequency range 10 Hz – 10 kHz. Velocity of wave in rod is 4000 m/s. Numbers of natural longitudinal oscillation that can be setup in rod is.
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(5)
Let rod oscillate in with ( 
) loop in AB and 
loop in BC
Possible values of 
Those lying in range 
are equal to 5.
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