Question

Q.1. Two waves of the same frequency are approaching each other with a velocity of 20 m/s and frequency n. What is the distance between consecutive nodes ?

4 points

A 20/n

B 10/n

C 5/n

D 10/n​

Answer 1

Answer:

10/n is the right option

Answer 2

Answer:

10 / n

Explanation:

Velocity (v) = 20 m/s

W.K.T. Distance between the two consecutive nodes = λ / 2 ⇒ (1)

And W.K.T. λ = v / n

                  λ = 20 / n

                  λ = (2 × 10) / n

Shifting 2 from right side numerator to the left side denominator we get,

                 λ / 2 = 10 / n (From 1)

So the distance between the two consecutive nodes = 10 / n

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