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In two similar wires of tension 16 N and T , 3 beats are heard, then T =

Options

  1. A49   N
  2. B25 N
  3. C64 N
  4. D80 N

Correct answer

A. 49   N

Step-by-step solution

Here , T 1 = 16 N , T 2 = ? As per the choice given, T 2 > T 1 ∴ n 2 > n 1 , n 2 - n 1 = 3 … ( i ) As n ∝ T ∴ n 2 n 1 = T 16 = T 4 If n 1 corresponds to 4 : n 2 corresponds to 3 + 4 = 7 , which is T . Therefore, T = 49 N

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