A point object P of mass $m$ and charge $q$ is placed at a distance $r$ from a stationary object $Q$ of mass $M$ and charge $-q$. Let $T_g$ be the time for $P$ to reach $Q$ if it is moving only under gravitational attraction. Similarly, let $T_e$ be the time for P to reach $Q$ if it is moving only under electrostatic attraction. Then,

• Correct answer
  A

  $T_g$ depends on $M$ but not on $m$.
• Correct answer
  B

  $T_e$ depends on $m$ but not on $M$.
• C

  $T_g^2$ is directly proportional to $G$.
• Correct answer
  D

  $T_e^2$ is directly proportional to $\epsilon_0$.

Hence, the correct answer is options: 'A', 'B', 'D'.