Actually I was trying to paste two figures in two pages with the following commands. But the \newpage command is not working (I have made it bold). Figures are gathering in one page.
\newpage
\begin{figure}
\centering
\includegraphics[width=4.5in,height=2.0in]{ef.eps}
Figure 1: Schematic diagram of the system considered.
\end{figure}
\newpage
\begin{figure}
\centering
\includegraphics[width=3.5in,height=2.2in]{s3.eps}
\end{figure}
\documentclass[12pt]{article}
\usepackage{graphicx}
\makeatletter
\parindent 0 pc
\oddsidemargin -.2 in \evensidemargin -.2 in \topmargin -.4
in \textheight 23 cm \textwidth 18 cm \setlength{\parsep}{0.5ex
plus0.2ex minus0.1ex}
\newcommand{\singlespacing}{\let\CS=\@currsize\renewcommand{\baselinestretch}
{1.0}\tiny\CS}
\newcommand{\doublespacing}{\let\CS=\@currsize\renewcommand{\baselinestretch}
{1.5}\tiny\CS}
\newcommand {\tab} {\hspace*{2em}}
\newcommand {\lab} {\hspace*{1em}}
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