Question
Question: Graph shows three waves that are separately sent along a string that is stretched under a certain te...
Graph shows three waves that are separately sent along a string that is stretched under a certain tension along an x-axis. If ω1, ω2 and ω3 are their angular frequencies respectively then:

A
ω1 = ω3 >ω2
B
ω1 >ω2 >ω3
C
ω2>ω1 = ω3
D
ω1 = ω2 = ω3
Answer
ω1 = ω3 >ω2
Explanation
Solution
As speed (=μT) is same for all thus wave with maximum wavelength will have minimum angular frequency
(by v = nλ).
Also as λ1 = λ3 thus ω1 = ω3.