$A$ ball is projected from ground with a velocity $V$ at an angle $\theta$ to the vertical. On its path it makes an elastic collison with $a$ vertical wall and returns to ground. The total time of flight of the ball is
$A$ ball is projected from ground with a velocity $V$ at an angle $\theta$ to the vertical. On its path it makes an elastic collison with $a$ vertical wall and returns to ground. The total time of flight of the ball is
- A
$\frac{{2v\sin \theta }}{g}$
- B
$\frac{{2v\cos \theta }}{g}$
- C
$\frac{{v\sin 2\theta }}{g}$
- D
$\frac{{v\cos \theta }}{g}$
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