Question

 An open organ pipe resonated with frequency f₁ and 2nd harmonic. Now one end is closed and the frequency is slowly increased. It resonates with frequency f₂ and nth harmonic. Then

(a) n = 3, f₂ = 3/4 f₁

(b) n = 5, f₂ = 3/4 f₁

(c) n = 3, f₂ = 5/4 f₁

(d) n = 5, f₂ = 5 4 f₁

Answer 1

For open organ pipe

Correct Choice : d.