Chapter 4, Problem 1RQ

To determine

Incorrect option among the given options.

Explanation of Solution

Like charges repel each other and both the given charges are positive so, option $\left(\text{a}\right)$ is correct.

The force on the both the charges are of same quantity so, option $\left(\text{b}\right)$ is correct.

The electrostatic force between given charges is inversely proportional to the square of distance between the charges, so as the distance between charges decreases then force increases in square of distance. The option $\left(\text{c}\right)$ is incorrect.

The electrostatic force acts along the line joining the charges so the option $\left(\text{d}\right)$ is correct.

The electrostatic force between two charges is affected by the presence the another charge and this force will also act on the another charge. So the third point charge $Q_3$ experiences net electrostatic force. The option $\left(\text{e}\right)$ is incorrect.

Thus the “$\underset{\_}{\text{option}\text{.}\left(\text{c}\right)}$” and “$\underset{\_}{\text{option}\text{.}\left(\text{e}\right)}$” are incorrect among the given options.