Physics · 2022
JEE Main · 24 June 2022, Shift 1 · Q35
A projectile is projected with velocity of 25 m / s at an angle θ with the horizontal. After t seconds its inclination with horizontal becomes zero.…
A projectile is projected with velocity of $\displaystyle 25 \mathrm{~m} / \mathrm{s}$ at an angle $\displaystyle \theta$ with the horizontal. After t seconds its inclination with horizontal becomes zero. If R represents horizontal range of the projectile, the value of $\displaystyle \theta$ will be :
[use $\displaystyle \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ ]
Official answer
(4)
$\displaystyle \cot ^{-1}\left(\frac{\mathrm{R}}{20 \mathrm{t}^2}\right)$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.