\documentclass[preprint,nofootinbib]{revtex4}

\usepackage{graphicx}

\usepackage{epsfig}

\usepackage{amssymb}

\usepackage{color}

\usepackage{amsmath}

\usepackage{lipsum}

\usepackage{pinlabel}

\usepackage{graphics}

\usepackage{epsf}

\usepackage{psfrag}

\usepackage{epstopdf}

\usepackage{graphicx}

\usepackage{caption}

\usepackage{epstopdf}‎

\begin{document}

\begin{figure}‎{!ht}

‎\centering‎

‎\includegraphics[width=0.1\textwidth]‎{../modified GB constrains/ziba/pic8 - Copy2.eps} ‎

\includegraphics[width=0.1\textwidth]{../modified GB constrains/ziba/pic2- Copy2.eps} ‎

‎\caption{here is an example}‎

‎\label{fig:delta}‎

‎\end{figure}‎‎‎

\end{document}