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A transverse wave travels on a taut steel wire with a velocity of v when tension in it is 2.06 × 10 4 N. When the tension is changed to T, the velocity changed to v/2. The value of T is closed to :

1. 30.5 × 10 4 N
2. 5.15 × 10 3 N
3. 2.50 × 10 4 N
4. 10.2 × 10 2 N

Correct answer: 5.15 × 10 3 N

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