In a resonance pipe the first and second resonances are obtained at depths 22.7 cm and 70.2 cm respectively. What will be the end correction?
1.05 cm
115.5 cm
92.5 cm
113.5 cm
For end correction x, l2+xl1+x = 3λ4λ4 = 3
x = l2-3l12 = 70.2-3×22.72 = 1.05 cm