A projectile is thrown with an initial velocity of \( \mathrm{P} \) \( \vec{v}=a \hat{i}+b \hat{...

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A projectile is thrown with an initial velocity of
\( \mathrm{P} \) \( \vec{v}=a \hat{i}+b \hat{j} \). If range of the projectile is double the

W maximum height attained by it then:
(1) \( a=2 b \)
(2) \( b=a \)
(3) \( b=2 a \)
(4) \( b=4 a \)
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