Question

The length of a sonometer wire AB is 110 cm. Where should the two bridges be placed from  A to divide the wire in 3 segments whose fundamental frequencies are in the ratio of 1 : 2 :3?

(a) 60 cm and 90 cm

(b) 30 cm and 60 cm

(c) 30 cm and 90 cm

(d) 40 cm and 80 cm.

Answer 1

Correct option (a) 60 cm and 90 cm

Explanation:

Length of sonometer wire (l )= 110 cm and ratio of frequencies = 1 : 2 : 3.