The surface of a planet is found to be uniformly charged. When a particle of mass \( m \) and no...

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The surface of a planet is found to be uniformly charged. When a particle of mass \( m \) and no charge is thrown at an angle from the surface of the planet, it has a parabolic trajectory as in projectile motion with horizontal range \( L \). A particle of mass \( m \) and charge \( q \), with the same initial conditions has a range \( L / 2 \). The range of particle of mass \( m \) and charge \( 2 q \) with the same initial conditions is
[KVPY 2011]
(a) \( L \)
(b) \( L / 2 \)
(c) \( L / 3 \)
(d) \( L / 4 \)
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