Question

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Answer 1

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Answer 2

Answer:By formula,

Velocity = √T / m

Where,

T - tension

m - mass per unit length.

By law,

Tension ∝ Velocity

As the tension of the rope increases, the velocity of the rope also increases.

Therefore,

Velocity of the rope / velocity of the blovk  = √Tension in the rope / √Tension in the blovk

√2 * 9.8 / 8 * 9.8

1/2

As the frequency is same,

Wavelength is calculated by,

∴ Wavelength of the balls = 2 * Wavelength of the files

2 x 0.06

0.12 m

Hence, the wavelength of the balls when it reaches the top of the rope is 0.12 m.