Two point charges `+q_(1)` and `-q_(2)` are placed at A and B respectvely. An electric line of force emerges from `q_(1)` making an angle `alpha=60^(@)` with line AB and terminates as `-q_(2)` making an angle of `90^(@)` with line AB.
(a). Find `|(q_(1))/(q_(2))|` ltbr. (b). Find the maximum value of angle `alpha` at which a line emitted from `q_(1)` terminates on charge `q_(2)`.

Answer

(a). `|(q_(1))/(q_(2))|=(2)/(1)`
(b). `alpha_(max)=90^(@)`