A body is projected vertically upwards from the surface of a planet of radius \( R \) with a vel...

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A body is projected vertically upwards from the surface of a planet of radius \( R \) with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is [KCET (Engg./Med.) 2002; EAMCET 2009;
AMU (Med.) 2012]
(a) \( R / 3 \)
(b) \( R / 2 \)
(c) \( R / 4 \)
(d) \( R / 5 \)
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