Question

A closed organ pipe of length 1.2m vibrates in its first overtone mode. The pressure variation is maximum at: 

(a) 0.8 m from the open end 

(b) 0.4 m from the open end 

(c) at the open end 

(d) 1.0 m from the open end

Answer 1

The correct option (b) 0.4 m from the open end 

Explanation:

Pressure variation will be maximum displacement nodes, ie, at 0.4 m from the end.