Two point like charges `Q_(1)` and `Q_(2)` are positioned at point 1 and 2. The firld intensity to the right of the chaege `Q_(2)` on the line that passes through the two charges varies accoreing to a law that is represented schematically in fig. The field intensity is assumed to be positive if its direction coincides with the positive direction on the x-axis. The distance between the charges is l.

The ratio of the absolute values of the charges `|Q_(1)//Q_(2)|` is

Options

A. `+,-`
B. `-,+`
C. `+,+`
D. `-,-`

Answer

A

Explanation

Electric field at (2) tends to `-infty` hence, the charge at (2) should be negative. There is neutral point to the right of charges. This is possible only when the charge at (1) should be positive.
Hence `Q_1` is positive and `Q_2` is negative