An ebonite rod rubbed with fur and a glass rod rubbed with silk cloth are brought nearer to each other. Then:

As shown in the figure, two particles, each of mass $\text{'}m\text{'}$ tied at the ends of a light string of length $2a$ are kept on a frictionless horizontal surface. When the mid point $\left(P\right)$ of the string is pulled vertically upwards with a small but constant force $F,$ the particles move towards each other on the surface. Magnitude of acceleration of each particle, when the separation between them becomes $2x$ is

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

Which of the following four figures correctly show the forces that three charged particles exert on each other?
$\left(\mathrm{i}\right)$

$\left(\mathrm{ii}\right)$
$\left(\mathrm{iii}\right)$

$\left(\mathrm{iv}\right)$

Write the quadrants in which the following points lie:

$\left(-4,7\right)$

A glass rod rubbed with silk is brought near the fur rubbed with an ebonite rod. What will be your observation between them?