If the plane $P$ passes through the intersection of two mutually perpendicular planes $2 x + k y - 5 z = 1$ and $3 k x - k y + z = 5 , k < 3$ and intercepts a unit length on positive $x$-axis, then the intercept made by the plane $P$ on the $y$-axis is\\
(1) $\frac { 1 } { 11 }$\\
(2) $\frac { 5 } { 11 }$\\
(3) 6\\
(4) 7