I→P,II→Q,III→T,IV→S
I→P,II→R,III→S,IV→Q
I→Q,II→P,III→R,IV→T
I→Q,II→S,III→R,IV→P
Correct option is B. I→P,II→R,III→S,IV→Q Fundamental frequency is maximum when length is minimum i.e. L₀,
Case 1. L=L₀, R=T₀, f=f₀; f₁=1/(2L₀√(T₀/μ))
Case 2. f₂=1/(L₀√(2T₀/(2μ)))=f₀/√2
Case 3. f₃=1/(L₀√(2T₀/(3μ)))=f₀/√3
Case 4. f₄=1/(L₀√(2T₀/(4μ)))=f₀/√4=f₀/2