If a 1.5 m long tube with a 0.5 cm opening has its first resonance point at 37 cm, what would be the theoretical location of L3 (in meters with 2 decimal places)? Is it possible to hear the third resonance point in the tube?
Given data l=1.5 m
1 m=100 cm |
Here 1.5 m is given we have to convert to meters
So, 1.5 m*100=150 cm
Here from data length of first resonance L 1=37 cm
If it is a closed pipe then
L 1: L 2:L 3=1:3:5:7:--------
L 3=5 L 1
=5(37)
L 3=185 cm |
Here we got 185>150
:It is a closed pipe we can’t hear the third resonance
For open pipe L 1:L 2:L 3:=====1:2:3
L 3=3 L 1
=3(37)
=111 cm (111<150)
:Here we can listen the third resonance
i.e., L 3=111 cm |
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