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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
Two projectiles are projected at $30^{\circ}$ and $60^{\circ}$ with the horizontal with the same speed. The ratio of the maximum height attained by the two projectiles respectively is:
  • A
    $2: \sqrt{3}$
  • B
    $\sqrt{3}: 1$
  • ✓
    $1: 3$
  • D
    $1: \sqrt{3}$
✓

Answer

Correct option: C.
$1: 3$
c
$H _{\max }=\frac{ u ^2 \sin ^2 \theta}{2 g }$

$\frac{ H _1}{ H _2}=\frac{\sin ^2 \theta_1}{\sin ^2 \theta_2}=\frac{1}{3}$

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