Question

A particle of mass $m$ and charge $q$ is thrown from a point in space where uniform gravitational field & electric field are present. The particle

(1) may follow a straight line
(2) may follow a circular path
(3) may follow a parabolic path

• A. $1$ & $2$ are correct
• B. $1$ & $3$ are correct
• C. $2$ & $3$ are correct
• D. all these are correct

Answer 1

Answer: (B)

When force due to the gravitation field is equal to force due to the electric field, the particle must follow a straight-line path with acceleration.
when force due to gravitation field is not equal to force due to the electric field, the particle will follow the path of a parabola,
Hence $1$ and $3$ both are correct