Q81 / 110 · VITEEE 2024 · Physics

The horizontal range of a projectile is $4 \sqrt{3}$ times of its maximum height. The angle of projection will be

  • A
    $60^{\circ}$
  • B
    $37^{\circ}$
  • Correct answer
    C
    $30^{\circ}$
  • D
    $45^{\circ}$

Solution

$R=4 \sqrt{3}$ $\begin{aligned} \frac{2 u^2 \sin \theta \cos \theta}{g} & =4 \sqrt{3}\left(\frac{u^2 \sin ^2 \theta}{2 g}\right) \\ \tan \theta & =\frac{1}{\sqrt{3}} \\ \therefore \quad \theta & =30^{\circ}\end{aligned}$

Hence, the correct answer is option: 'C'.

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