Question

If a stretched string is 4m and it has 4 loops of stationary waves then wavelength is

Answer 1

Answer:

2m

Explanation:

lambda= f/v

lambda= 4/2

lambda=2m

Answer 2

Answer:

8/3m

Explanation:

A string of length L can sustain 2, 3, 4, .. n stationery nodes. The wavelength in 2 nodes is 2L, in 3 nodes, it is L, in 4 nodes, it is 2L/3, in n nodes, it is 2L/(n-1). n is minimum 2 since the string is tied at both ends (2 nodes).

THEREFORE  as per the question

wavelength = 2*4/3 = 8/3 m

#SPJ2