Question

Two similar waves are traveling through the same medium. Wave A has a frequency that is 9 times that of Wave B. (1 point)
Responses

λA = 9λB

λ A = 9 λ B

λA = 1/3 λB

λ A = 1/3 λ B

λA = 1/9 λB

λ A = 1/9 λ B

λA = λB

λ A = λ B

Answer 1

λA = 1/9 λB

Reason: in the same medium v is constant, v = fλ. If fA = 9 fB then λA = v/fA = v/(9 fB) = (1/9)λB.