Question

Fill in the blank space in the following statement :-
"The abscissa of a point on the $y$-axis is ____

Answer 1

Abscissa or the $x$-coordinate of a point is its distance from the $y$-axis.

Since the distance of a point on $y$-axis from $y$-axis will be zero, the abscissa of a point on the $y$-axis is $0$.

Hence, the correct answer is $0$.