A prestressed rectangular beam which carries two concentrated W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is

- 1
  
  $\frac{W L}{P}$
- 2
  
  $\frac{W L}{2 P}$
- 3
  
  $\frac{W L}{3 P}$
- 4
  
  $\frac{3 W L}{5 P}$

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