Question

A wave on a long spring has frequency f, wavelength  and speed v. The tension in the spring is changed. A new wave on the spring has three times frequency and twice the wavelength. The new wave speed is
(A) 6v
(B) 3v
(C) 2v
(D) v

Answer 1

Answer:

the answer is 6v.

Explanation:

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Answer 2

Answer:

(A) 6 v

Explanation:

As,

     Speed=Wavelength*frequency

                =2(Wavelength)*3(frequency)

                =6v

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