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3.2 , motion in plane — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics3.2 , motion in plane1 Mark
MCQ
A projectile fired with initial velocity $u$ at some angle $\theta $ has a range $R$. If the initial velocity be doubled at the same angle of projection, then the range will be
  • A
    $2R$
  • B
    $R/2$
  • C
    $R$
  • ✓
    $4R$
✓

Answer

Correct option: D.
$4R$
d
(d) $R = \frac{{{u^2}\sin 2\theta }}{g}$

$\therefore R \propto {u^2}$. If initial velocity be doubled then range will become four times.

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