Align arrows orthogonally to the line array

This code:

\documentclass[tikz,border=1mm]{standalone}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}[scale=4]
\foreach \x in {1,...,10}{
\draw (-1+0.1*\x,1+0.1*\x) -- (1+0.1*\x,-.5+0.1*\x);
}

\draw[->,thick, xshift=5mm,yshift=2mm] (0,0) -- (0,0.2) node (r1) [right] {};
\draw[->,thick, xshift=15mm,yshift=5mm] (0,0) -- (0,0.2) node (r1) [right] {};
\end{tikzpicture}
\end{document}

produces the following output: What do I have to do so that the arrows are orthogonal to the lines and their origin begins exactly at a line?

For every line "i" I added two points "Ai" and "Bi" (you can add more if you need) which can be used as starting points of vectors

\documentclass[tikz,border=1mm]{standalone}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}[scale=4]
\foreach \x in {1,...,10}{
\draw (-1+0.1*\x,1+0.1*\x) -- (1+0.1*\x,-.5+0.1*\x)
coordinate[pos=.8](A\x) coordinate[pos=.7](B\x);
}

\draw[->,thick] (B2) -- +(0.1,0.1) node (r1) [right] {};
\draw[->,thick] (A8) -- +(0.1,0.1) node (r1) [right] {};
\end{tikzpicture}
\end{document}

If we could improve Salim Bou's answer a little more.

\documentclass[margin=4mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\begin{tikzpicture}[scale=4]
\foreach \x in {1,...,10}{
\pgfmathtruncatemacro{\y}{\x*100};
\draw (-1+0.1*\x,1+0.1*\x)coordinate(\x) -- (1+0.1*\x,-.5+0.1*\x)coordinate(\y) ;}

\coordinate (E0) at ($(1)!.75!(100)$);
\draw[-latex,red] (E0) --++ (45:0.15);

\coordinate (E1) at ($(3)!.25!(300)$);
\draw[-latex,orange] (E1) --++ (45:0.35);

\coordinate (E2) at ($(5)!.8!(500)$);
\draw[-latex,blue] (E2) --++ (45:0.45);

\end{tikzpicture}
\end{document} 